diff --git a/.github/ISSUE_TEMPLATE/bug_report.yml b/.github/ISSUE_TEMPLATE/bug_report.yml
index f780481b8..b9a41e740 100644
--- a/.github/ISSUE_TEMPLATE/bug_report.yml
+++ b/.github/ISSUE_TEMPLATE/bug_report.yml
@@ -1,6 +1,6 @@
 name: 🐛 缺陷报告 Bug Report
 description: 报告缺陷以帮助我们进行改进 Report defects to help us improve
-title: ""
+title: "请输入问题报告标题 Please enter the title of the bug report"
 body:
   - type: checkboxes
     attributes:
diff --git a/.github/ISSUE_TEMPLATE/feature_request.yml b/.github/ISSUE_TEMPLATE/feature_request.yml
index 6b8e0a4ec..e94f60371 100644
--- a/.github/ISSUE_TEMPLATE/feature_request.yml
+++ b/.github/ISSUE_TEMPLATE/feature_request.yml
@@ -1,6 +1,6 @@
 name: ✨ 特性提议 Request new features
 description: 欢迎提出你所期待的新特性 Come up with the features you expected
-title: ""
+title: "请输入特性提议标题 Please enter the title of the feature request"
 body:
   - type: textarea
     attributes:
diff --git a/app/guide/20210808180117-czj9bvb/20200812220555-lj3enxa.sy b/app/guide/20210808180117-czj9bvb/20200812220555-lj3enxa.sy
index 3360789a6..95354d743 100644
--- a/app/guide/20210808180117-czj9bvb/20200812220555-lj3enxa.sy
+++ b/app/guide/20210808180117-czj9bvb/20200812220555-lj3enxa.sy
@@ -529,8 +529,8 @@
 												{
 													"Type": "NodeTextMark",
 													"TextMarkType": "a",
-													"TextMarkAHref": "https://ld246.com/domain/siyuan",
-													"TextMarkTextContent": "链滴（中文讨论区）"
+													"TextMarkAHref": "https://ld246.com/article/1649901726096",
+													"TextMarkTextContent": "链滴（中文反馈）"
 												}
 											]
 										}
diff --git a/app/guide/20211226090932-5lcq56f/20211226115423-d5z1joq.sy b/app/guide/20211226090932-5lcq56f/20211226115423-d5z1joq.sy
index dbf447f6d..3565dad0c 100644
--- a/app/guide/20211226090932-5lcq56f/20211226115423-d5z1joq.sy
+++ b/app/guide/20211226090932-5lcq56f/20211226115423-d5z1joq.sy
@@ -530,8 +530,8 @@
 												{
 													"Type": "NodeTextMark",
 													"TextMarkType": "a",
-													"TextMarkAHref": "https://ld246.com/domain/siyuan",
-													"TextMarkTextContent": "鏈滴（中文討論區）"
+													"TextMarkAHref": "https://ld246.com/article/1649901726096",
+													"TextMarkTextContent": "鏈滴（中文反饋）"
 												}
 											]
 										}
diff --git a/app/stage/auth.html b/app/stage/auth.html
index 738eece78..38ddc65ba 100644
--- a/app/stage/auth.html
+++ b/app/stage/auth.html
@@ -153,7 +153,7 @@
     </div>
     <button class="b3-button" onclick="submitAuth()">解锁 Unlock</button>
     <div style="color: #5f6368;font-size: 14px;margin: 16px 0;">
-        如果你在使用中遇到问题，请到<a href="https://ld246.com/domain/siyuan" target="_blank">社区</a>进行反馈<br>
+        如果你在使用中遇到问题，请到<a href="https://ld246.com/article/1649901726096" target="_blank">这里</a>反馈<br>
         If you encounter problems, please report it on <a href="https://github.com/siyuan-note/siyuan/issues"
                                                           target="_blank">GitHub</a>
     </div>
diff --git a/kernel/cache/asset.go b/kernel/cache/asset.go
index bf9d2368b..7c68e1118 100644
--- a/kernel/cache/asset.go
+++ b/kernel/cache/asset.go
@@ -33,9 +33,24 @@ type Asset struct {
 	Updated int64  `json:"updated"`
 }
 
-var Assets = map[string]*Asset{}
+var assetsCache = map[string]*Asset{}
 var assetsLock = sync.Mutex{}
 
+func GetAssets() (ret map[string]*Asset) {
+	assetsLock.Lock()
+	defer assetsLock.Unlock()
+
+	ret = assetsCache
+	return
+}
+
+func RemoveAsset(path string) {
+	assetsLock.Lock()
+	defer assetsLock.Unlock()
+
+	delete(assetsCache, path)
+}
+
 func LoadAssets() {
 	defer logging.Recover()
 
@@ -43,6 +58,7 @@ func LoadAssets() {
 	assetsLock.Lock()
 	defer assetsLock.Unlock()
 
+	assetsCache = map[string]*Asset{}
 	assets := util.GetDataAssetsAbsPath()
 	filepath.Walk(assets, func(path string, info fs.FileInfo, err error) error {
 		if nil == info {
@@ -60,7 +76,7 @@ func LoadAssets() {
 
 		hName := util.RemoveID(info.Name())
 		path = "assets" + filepath.ToSlash(strings.TrimPrefix(path, assets))
-		Assets[path] = &Asset{
+		assetsCache[path] = &Asset{
 			HName:   hName,
 			Path:    path,
 			Updated: info.ModTime().UnixMilli(),
diff --git a/kernel/model/assets.go b/kernel/model/assets.go
index d67fed919..f7c50786e 100644
--- a/kernel/model/assets.go
+++ b/kernel/model/assets.go
@@ -208,7 +208,7 @@ func SearchAssetsByName(keyword string) (ret []*cache.Asset) {
 	ret = []*cache.Asset{}
 
 	count := 0
-	for _, asset := range cache.Assets {
+	for _, asset := range cache.GetAssets() {
 		if !strings.Contains(strings.ToLower(asset.HName), strings.ToLower(keyword)) {
 			continue
 		}
@@ -471,13 +471,14 @@ func RemoveUnusedAssets() (ret []string) {
 	}
 
 	indexHistoryDir(filepath.Base(historyDir), NewLute())
+	cache.LoadAssets()
 	return
 }
 
 func RemoveUnusedAsset(p string) (ret string) {
-	p = filepath.Join(util.DataDir, p)
-	if !gulu.File.IsExist(p) {
-		return p
+	absPath := filepath.Join(util.DataDir, p)
+	if !gulu.File.IsExist(absPath) {
+		return absPath
 	}
 
 	historyDir, err := GetHistoryDir(HistoryOpClean)
@@ -486,24 +487,25 @@ func RemoveUnusedAsset(p string) (ret string) {
 		return
 	}
 
-	newP := strings.TrimPrefix(p, util.DataDir)
+	newP := strings.TrimPrefix(absPath, util.DataDir)
 	historyPath := filepath.Join(historyDir, newP)
-	if gulu.File.IsExist(p) {
-		if err = gulu.File.Copy(p, historyPath); nil != err {
+	if gulu.File.IsExist(absPath) {
+		if err = gulu.File.Copy(absPath, historyPath); nil != err {
 			return
 		}
 
-		hash, _ := util.GetEtag(p)
+		hash, _ := util.GetEtag(absPath)
 		sql.DeleteAssetsByHashes([]string{hash})
 	}
 
-	if err = os.RemoveAll(p); nil != err {
-		logging.LogErrorf("remove unused asset [%s] failed: %s", p, err)
+	if err = os.RemoveAll(absPath); nil != err {
+		logging.LogErrorf("remove unused asset [%s] failed: %s", absPath, err)
 	}
-	ret = p
+	ret = absPath
 	IncSync()
 
 	indexHistoryDir(filepath.Base(historyDir), NewLute())
+	cache.RemoveAsset(p)
 	return
 }