diff --git a/server/MetasequoiaImeEngine b/server/MetasequoiaImeEngine
index ddcb3227..804fcf19 160000
--- a/server/MetasequoiaImeEngine
+++ b/server/MetasequoiaImeEngine
@@ -1 +1 @@
-Subproject commit ddcb3227742dfeb0cc24800e17f219dadfb0a575
+Subproject commit 804fcf19232583a7eab4c36971291249554c8f46
diff --git a/server/src/settings/dictionary_manager.cpp b/server/src/settings/dictionary_manager.cpp
index 5969f2d4..085cacc6 100644
--- a/server/src/settings/dictionary_manager.cpp
+++ b/server/src/settings/dictionary_manager.cpp
@@ -375,35 +375,7 @@ bool InsertChineseWord(sqlite3 *db, const quanpin::Segments &segments, const std
 
 bool ParseImportLine(const std::string &line, std::string &word, std::string &code, int &weight, std::string &message)
 {
-    std::istringstream iss(line);
-    std::string weight_str;
-    std::string extra;
-    if (!(iss >> word >> code >> weight_str) || (iss >> extra))
-    {
-        message = "格式错误，应为：词语 全拼 权重（全拼可用 ' 分音节）";
-        return false;
-    }
-    if (word.empty() || code.empty())
-    {
-        message = "词语和拼音不能为空";
-        return false;
-    }
-    if (weight_str.empty() || !std::all_of(weight_str.begin(), weight_str.end(),
-                                           [](unsigned char ch) { return std::isdigit(ch); }))
-    {
-        message = "权重必须是非负整数";
-        return false;
-    }
-    try
-    {
-        weight = (std::max)(0, std::stoi(weight_str));
-    }
-    catch (...)
-    {
-        message = "权重数值无效";
-        return false;
-    }
-    return true;
+    return Validation::ParseCodedImportLine(line, word, code, weight, message);
 }
 
 json::object ImportChinese(const json::object &request)
@@ -438,10 +410,7 @@ json::object ImportChinese(const json::object &request)
     {
         ++line_no;
         if (!line.empty() && line.back() == '\r') line.pop_back();
-        const auto begin = line.find_first_not_of(" \t");
-        if (begin == std::string::npos) continue;
-        const auto end = line.find_last_not_of(" \t");
-        line = line.substr(begin, end - begin + 1);
+        if (line.find_first_not_of(" \t") == std::string::npos) continue;
 
         std::string word, code;
         int weight = 0;
@@ -889,9 +858,118 @@ json::object HandleEnglish(const json::object &request)
     return Result(ok, ok ? std::string("英文词条") + label + "成功" : std::string(label) + "失败：" + sqlite3_errmsg(db.get()));
 }
 
+json::object ImportWubi(const json::object &request)
+{
+    std::string content = StringValue(request, "content");
+    if (content.size() >= 3 && static_cast<unsigned char>(content[0]) == 0xEF &&
+        static_cast<unsigned char>(content[1]) == 0xBB && static_cast<unsigned char>(content[2]) == 0xBF)
+        content.erase(0, 3);
+    if (content.find_first_not_of(" \t\r\n") == std::string::npos)
+        return Result(false, "文件内容为空");
+
+    std::string error;
+    Db db = OpenDatabase("msime.db", error);
+    if (!db) return Result(false, "打开五笔词库失败：" + error);
+    Stmt insert = Prepare(db.get(),
+        "INSERT INTO wubi86(key,value,weight) SELECT ?1,?2,?3 "
+        "WHERE NOT EXISTS (SELECT 1 FROM wubi86 WHERE key=?1 AND value=?2)", error);
+    if (!insert) return Result(false, "准备导入失败：" + error);
+
+    const auto valid_code = [](const std::string &value) {
+        return !value.empty() &&
+               std::all_of(value.begin(), value.end(), [](unsigned char ch) { return ch >= 'a' && ch <= 'z'; });
+    };
+    int inserted = 0;
+    int skipped = 0;
+    int failed = 0;
+    std::vector<std::string> error_details;
+    const auto append_error = [&](int line_no, const std::string &detail) {
+        ++failed;
+        if (error_details.size() < 5)
+            error_details.push_back("第 " + std::to_string(line_no) + " 行：" + detail);
+    };
+
+    sqlite3_exec(db.get(), "BEGIN IMMEDIATE", nullptr, nullptr, nullptr);
+    std::istringstream stream(content);
+    std::string line;
+    int line_no = 0;
+    while (std::getline(stream, line))
+    {
+        ++line_no;
+        if (!line.empty() && line.back() == '\r') line.pop_back();
+        if (line.find_first_not_of(" \t") == std::string::npos) continue;
+
+        std::string word;
+        std::string code;
+        std::string message;
+        int weight = 0;
+        if (!Validation::ParseCodedImportLine(line, word, code, weight, message))
+        {
+            append_error(line_no, message);
+            continue;
+        }
+        std::transform(code.begin(), code.end(), code.begin(),
+                       [](unsigned char ch) { return static_cast<char>(std::tolower(ch)); });
+        if (!valid_code(code))
+        {
+            append_error(line_no, "五笔编码只能包含英文字母");
+            continue;
+        }
+
+        sqlite3_reset(insert.get());
+        sqlite3_clear_bindings(insert.get());
+        const bool ok = BindText(insert.get(), 1, code) && BindText(insert.get(), 2, word) &&
+                        sqlite3_bind_int(insert.get(), 3, weight) == SQLITE_OK &&
+                        sqlite3_step(insert.get()) == SQLITE_DONE;
+        if (!ok)
+        {
+            append_error(line_no, "写入失败：" + std::string(sqlite3_errmsg(db.get())));
+            continue;
+        }
+        if (sqlite3_changes(db.get()) == 0)
+        {
+            ++skipped;
+            continue;
+        }
+        (void)user_dictionary::record_user_insert(user_dictionary::default_user_db_path(),
+                                                  user_dictionary::DictionaryKind::Wubi,
+                                                  code, word, weight);
+        ++inserted;
+    }
+    sqlite3_exec(db.get(), "COMMIT", nullptr, nullptr, nullptr);
+
+    if (inserted == 0 && skipped == 0 && failed == 0)
+        return Result(false, "文件中没有可导入的词条");
+    std::string message;
+    if (inserted > 0) message += "成功导入 " + std::to_string(inserted) + " 条";
+    if (skipped > 0)
+    {
+        if (!message.empty()) message += "，";
+        message += "跳过 " + std::to_string(skipped) + " 条（已存在）";
+    }
+    if (failed > 0)
+    {
+        if (!message.empty()) message += "，";
+        message += "失败 " + std::to_string(failed) + " 条";
+        if (!error_details.empty())
+        {
+            message += "。";
+            for (size_t i = 0; i < error_details.size(); ++i)
+            {
+                if (i) message += "；";
+                message += error_details[i];
+            }
+            if (static_cast<int>(error_details.size()) < failed) message += "等";
+        }
+    }
+    if (inserted > 0) NotifyImeServerClearDictCache();
+    return Result(inserted > 0 || (failed == 0 && skipped > 0), message);
+}
+
 json::object HandleWubi(const json::object &request)
 {
     const std::string action = StringValue(request, "action");
+    if (action == "import") return ImportWubi(request);
     std::string code = StringValue(request, "code");
     const std::string word = StringValue(request, "word");
     const int weight = (std::max)(0, IntValue(request, "weight", 10));
diff --git a/server/src/settings/dictionary_validation.cpp b/server/src/settings/dictionary_validation.cpp
index 95e69b1b..13b15a84 100644
--- a/server/src/settings/dictionary_validation.cpp
+++ b/server/src/settings/dictionary_validation.cpp
@@ -6,6 +6,7 @@
 
 #include <algorithm>
 #include <cctype>
+#include <vector>
 
 namespace SettingsDictionary::Validation
 {
@@ -53,6 +54,59 @@ bool NormalizeFullPinyin(const std::string &input, quanpin::Segments &segments,
     return without_delimiters == source_without_delimiters;
 }
 
+bool ParseCodedImportLine(const std::string &line, std::string &word, std::string &code, int &weight,
+                          std::string &message)
+{
+    const auto trim = [](std::string value) {
+        const auto begin = value.find_first_not_of(' ');
+        if (begin == std::string::npos)
+            return std::string{};
+        const auto end = value.find_last_not_of(' ');
+        return value.substr(begin, end - begin + 1);
+    };
+
+    std::vector<std::string> fields;
+    std::string::size_type start = 0;
+    for (;;)
+    {
+        const auto separator = line.find('\t', start);
+        fields.push_back(trim(line.substr(start, separator == std::string::npos ? separator : separator - start)));
+        if (separator == std::string::npos)
+            break;
+        start = separator + 1;
+    }
+    if (fields.size() != 3)
+    {
+        message = "格式错误，应为：词语<Tab>编码<Tab>权重";
+        return false;
+    }
+
+    word = fields[0];
+    code = fields[1];
+    const std::string &weight_text = fields[2];
+    if (word.empty() || code.empty())
+    {
+        message = "词语和编码不能为空";
+        return false;
+    }
+    if (weight_text.empty() ||
+        !std::all_of(weight_text.begin(), weight_text.end(), [](unsigned char ch) { return std::isdigit(ch); }))
+    {
+        message = "权重必须是非负整数";
+        return false;
+    }
+    try
+    {
+        weight = std::stoi(weight_text);
+    }
+    catch (...)
+    {
+        message = "权重数值无效";
+        return false;
+    }
+    return true;
+}
+
 bool QuickPhraseFitsNamedPipe(const std::string &phrase)
 {
     try
diff --git a/server/src/settings/dictionary_validation.h b/server/src/settings/dictionary_validation.h
index 607d4cbc..fbbd30ec 100644
--- a/server/src/settings/dictionary_validation.h
+++ b/server/src/settings/dictionary_validation.h
@@ -7,5 +7,7 @@
 namespace SettingsDictionary::Validation
 {
 bool NormalizeFullPinyin(const std::string &input, quanpin::Segments &segments, std::string &normalized);
+bool ParseCodedImportLine(const std::string &line, std::string &word, std::string &code, int &weight,
+                          std::string &message);
 bool QuickPhraseFitsNamedPipe(const std::string &phrase);
 } // namespace SettingsDictionary::Validation
diff --git a/server/tests/src/test_dictionary_validation.cpp b/server/tests/src/test_dictionary_validation.cpp
index a524e940..a41738be 100644
--- a/server/tests/src/test_dictionary_validation.cpp
+++ b/server/tests/src/test_dictionary_validation.cpp
@@ -26,3 +26,22 @@ TEST_CASE(QuickPhraseValidationMatchesNamedPipeWcharCapacity)
     REQUIRE(SettingsDictionary::Validation::QuickPhraseFitsNamedPipe(std::string(197, 'a') + emoji));
     REQUIRE(!SettingsDictionary::Validation::QuickPhraseFitsNamedPipe(std::string(198, 'a') + emoji));
 }
+
+TEST_CASE(CodedDictionaryImportRequiresTabsAndPreservesSpacesInWords)
+{
+    std::string word;
+    std::string code;
+    std::string message;
+    int weight = -1;
+
+    REQUIRE(SettingsDictionary::Validation::ParseCodedImportLine("包含 空格的词\tbao'han'kong'ge'de'ci\t123", word,
+                                                                 code, weight, message));
+    REQUIRE_EQ(word, std::string("包含 空格的词"));
+    REQUIRE_EQ(code, std::string("bao'han'kong'ge'de'ci"));
+    REQUIRE_EQ(weight, 123);
+
+    REQUIRE(!SettingsDictionary::Validation::ParseCodedImportLine("普通词 putongci 10", word, code, weight, message));
+    REQUIRE(!SettingsDictionary::Validation::ParseCodedImportLine("普通词\tputongci", word, code, weight, message));
+    REQUIRE(!SettingsDictionary::Validation::ParseCodedImportLine("普通词\tputongci\t10\textra", word, code, weight,
+                                                                  message));
+}
diff --git a/server/tests/src/test_quanpin_scheme.cpp b/server/tests/src/test_quanpin_scheme.cpp
index 8319489f..4f6b6ada 100644
--- a/server/tests/src/test_quanpin_scheme.cpp
+++ b/server/tests/src/test_quanpin_scheme.cpp
@@ -5,6 +5,9 @@
 #include "MetasequoiaImeEngine/quanpin/quanpin_utils.h"
 #include "MetasequoiaImeEngine/schemes/quanpin_scheme.h"
 #include <algorithm>
+#include <filesystem>
+#include <sqlite3.h>
+#include <stdexcept>
 #include <utility>
 #include <vector>
 
@@ -14,6 +17,32 @@ void InputKey(QuanpinScheme &scheme, UINT vk, WCHAR wch, UINT modifiers_down = 0
 {
     scheme.handle_key(vk, modifiers_down, wch);
 }
+
+std::filesystem::path CreatePinyinCacheDatabase()
+{
+    const auto path = std::filesystem::temp_directory_path() / "msime-pinyin-cache-refresh-test.db";
+    std::filesystem::remove(path);
+    sqlite3 *db = nullptr;
+    if (sqlite3_open(path.string().c_str(), &db) != SQLITE_OK)
+    {
+        throw std::runtime_error("Failed to create temporary pinyin database.");
+    }
+    const char *sql =
+        "PRAGMA journal_mode=WAL;"
+        "CREATE TABLE tbl_1_n(key TEXT,jp TEXT,value TEXT,weight INTEGER);"
+        "CREATE TABLE tbl_1_a(key TEXT,jp TEXT,value TEXT,weight INTEGER);"
+        "CREATE TABLE tbl_2_a(key TEXT,jp TEXT,value TEXT,weight INTEGER);"
+        "CREATE TABLE tbl_3_a(key TEXT,jp TEXT,value TEXT,weight INTEGER);"
+        "INSERT INTO tbl_3_a VALUES('ao''shi''ke','ask','奥湿克',1);";
+    const int result = sqlite3_exec(db, sql, nullptr, nullptr, nullptr);
+    sqlite3_close(db);
+    if (result != SQLITE_OK)
+    {
+        std::filesystem::remove(path);
+        throw std::runtime_error("Failed to initialize temporary pinyin database.");
+    }
+    return path;
+}
 }
 
 TEST_CASE(QuanpinSchemeSpaceDoesNotResetComposition)
@@ -114,6 +143,29 @@ TEST_CASE(QuanpinCandidateCacheKeepsManualSegmentationBoundariesDistinct)
                          [&](const WordItem &item) { return item.word == automatic_only_candidate; }));
 }
 
+TEST_CASE(QuanpinCandidateCacheDetectsExternalDictionaryWrites)
+{
+    const auto db_path = CreatePinyinCacheDatabase();
+    {
+        QuanpinDictionary dictionary(db_path.string());
+        const auto before = dictionary.query("aoshike", "ao'shi'ke");
+        REQUIRE(std::none_of(before.begin(), before.end(),
+                             [](const WordItem &item) { return item.word == "澳鳾科"; }));
+
+        sqlite3 *writer = nullptr;
+        REQUIRE_EQ(sqlite3_open(db_path.string().c_str(), &writer), SQLITE_OK);
+        REQUIRE_EQ(sqlite3_exec(writer,
+                                "INSERT INTO tbl_3_a VALUES('ao''shi''ke','ask','澳鳾科',1)",
+                                nullptr, nullptr, nullptr), SQLITE_OK);
+        sqlite3_close(writer);
+
+        const auto after = dictionary.query("aoshike", "ao'shi'ke");
+        REQUIRE(std::any_of(after.begin(), after.end(),
+                            [](const WordItem &item) { return item.word == "澳鳾科"; }));
+    }
+    std::filesystem::remove(db_path);
+}
+
 TEST_CASE(QuanpinSchemePreservesUppercaseRawInputForHelpcodes)
 {
     QuanpinScheme scheme;