diff --git a/internal/leetcode/base.go b/internal/leetcode/base.go
index 796854f61..b1e053649 100644
--- a/internal/leetcode/base.go
+++ b/internal/leetcode/base.go
@@ -25,7 +25,7 @@ var (
 
 func graphQLRequest(filename string, days int, jsonStr string, v interface{}) {
 	data := remember(filename, days, func() []byte {
-		return client.PostJson(graphqlUrl, jsonStr)
+		return client.PostJson(graphQL, jsonStr)
 	})
 	jsonDecode(data, &v)
 }
diff --git a/internal/leetcode/config.go b/internal/leetcode/config.go
index cc77044ef..0fbf09123 100644
--- a/internal/leetcode/config.go
+++ b/internal/leetcode/config.go
@@ -8,7 +8,8 @@ const (
 	apiProblemsShellUrl      = "https://leetcode.com/api/problems/shell/"
 	problemsetAllUrl         = "https://leetcode.com/problemset/all/"
 	questionArticleUrl       = "https://leetcode.com/articles/%s/"
-	graphqlUrl               = "https://leetcode-cn.com/graphql"
+	graphQLUrl               = "https://leetcode.com/graphql"
+	graphQLCnUrl             = "https://leetcode-cn.com/graphql"
 	apiProgressAllUrl        = "https://leetcode.com/api/progress/all/"
 	submissionsLatestUrl     = "https://leetcode.com/submissions/latest/"
 )
@@ -26,3 +27,5 @@ const (
 	questionArticleFile     = "question_article_%s.html"
 	topicTagFile            = "topic_tag_%s.json"
 )
+
+var graphQL = graphQLCnUrl
diff --git a/internal/leetcode/question_data.go b/internal/leetcode/question_data.go
index 12f063a6b..147675a27 100644
--- a/internal/leetcode/question_data.go
+++ b/internal/leetcode/question_data.go
@@ -28,10 +28,15 @@ func QuestionData(titleSlug string, isForce bool) (qd questionDataType) {
 	graphQLRequest(filename, days, jsonStr, &qd)
 	if qd.Data.Question.TitleSlug == "" {
 		_ = os.Remove(getCachePath(filename))
+		if graphQL == graphQLCnUrl {
+			graphQL = graphQLUrl
+			return QuestionData(titleSlug, isForce)
+		}
 		for _, err := range qd.Errors {
 			log.Println(titleSlug, err.Message)
 		}
 	}
+	graphQL = graphQLCnUrl
 	return
 }
 
diff --git a/tag/README.md b/tag/README.md
index aea2bb5d2..343590160 100644
--- a/tag/README.md
+++ b/tag/README.md
@@ -17,7 +17,7 @@
 | 11 | [Breadth-first Search](https://github.com/openset/leetcode/tree/master/tag/breadth-first-search/README.md) | [广度优先搜索](https://github.com/openset/leetcode/tree/master/tag/breadth-first-search/README.md) | | 12 | [Stack](https://github.com/openset/leetcode/tree/master/tag/stack/README.md) | [栈](https://github.com/openset/leetcode/tree/master/tag/stack/README.md) | 
 | 13 | [Backtracking](https://github.com/openset/leetcode/tree/master/tag/backtracking/README.md) | [回溯算法](https://github.com/openset/leetcode/tree/master/tag/backtracking/README.md) | | 14 | [Design](https://github.com/openset/leetcode/tree/master/tag/design/README.md) | [设计](https://github.com/openset/leetcode/tree/master/tag/design/README.md) | 
 | 15 | [Linked List](https://github.com/openset/leetcode/tree/master/tag/linked-list/README.md) | [链表](https://github.com/openset/leetcode/tree/master/tag/linked-list/README.md) | | 16 | [Heap](https://github.com/openset/leetcode/tree/master/tag/heap/README.md) | [堆](https://github.com/openset/leetcode/tree/master/tag/heap/README.md) | 
-| 17 | [Bit Manipulation](https://github.com/openset/leetcode/tree/master/tag/bit-manipulation/README.md) | [位运算](https://github.com/openset/leetcode/tree/master/tag/bit-manipulation/README.md) | | 18 | [Sort](https://github.com/openset/leetcode/tree/master/tag/sort/README.md) | [排序](https://github.com/openset/leetcode/tree/master/tag/sort/README.md) | 
+| 17 | [Sort](https://github.com/openset/leetcode/tree/master/tag/sort/README.md) | [排序](https://github.com/openset/leetcode/tree/master/tag/sort/README.md) | | 18 | [Bit Manipulation](https://github.com/openset/leetcode/tree/master/tag/bit-manipulation/README.md) | [位运算](https://github.com/openset/leetcode/tree/master/tag/bit-manipulation/README.md) | 
 | 19 | [Graph](https://github.com/openset/leetcode/tree/master/tag/graph/README.md) | [图](https://github.com/openset/leetcode/tree/master/tag/graph/README.md) | | 20 | [Union Find](https://github.com/openset/leetcode/tree/master/tag/union-find/README.md) | [并查集](https://github.com/openset/leetcode/tree/master/tag/union-find/README.md) | 
 | 21 | [Divide and Conquer](https://github.com/openset/leetcode/tree/master/tag/divide-and-conquer/README.md) | [分治算法](https://github.com/openset/leetcode/tree/master/tag/divide-and-conquer/README.md) | | 22 | [Trie](https://github.com/openset/leetcode/tree/master/tag/trie/README.md) | [字典树](https://github.com/openset/leetcode/tree/master/tag/trie/README.md) | 
 | 23 | [Sliding Window](https://github.com/openset/leetcode/tree/master/tag/sliding-window/README.md) | [Sliding Window](https://github.com/openset/leetcode/tree/master/tag/sliding-window/README.md) | | 24 | [Recursion](https://github.com/openset/leetcode/tree/master/tag/recursion/README.md) | [递归](https://github.com/openset/leetcode/tree/master/tag/recursion/README.md) | 
diff --git a/tag/depth-first-search/README.md b/tag/depth-first-search/README.md
index ee34d0f2b..cd22417a6 100644
--- a/tag/depth-first-search/README.md
+++ b/tag/depth-first-search/README.md
@@ -9,6 +9,7 @@
 
 | # | 题名 | 标签 | 难度 |
 | :-: | - | - | :-: |
+| 1080 | [根到叶路径上的不足节点](https://github.com/openset/leetcode/tree/master/problems/insufficient-nodes-in-root-to-leaf-paths) | [[深度优先搜索](https://github.com/openset/leetcode/tree/master/tag/depth-first-search/README.md)]  | Medium |
 | 1061 | [按字典序排列最小的等效字符串](https://github.com/openset/leetcode/tree/master/problems/lexicographically-smallest-equivalent-string) 🔒 | [[深度优先搜索](https://github.com/openset/leetcode/tree/master/tag/depth-first-search/README.md)] [[并查集](https://github.com/openset/leetcode/tree/master/tag/union-find/README.md)]  | Medium |
 | 1034 | [边框着色](https://github.com/openset/leetcode/tree/master/problems/coloring-a-border) | [[深度优先搜索](https://github.com/openset/leetcode/tree/master/tag/depth-first-search/README.md)]  | Medium |
 | 1028 | [从先序遍历还原二叉树](https://github.com/openset/leetcode/tree/master/problems/recover-a-tree-from-preorder-traversal) | [[树](https://github.com/openset/leetcode/tree/master/tag/tree/README.md)] [[深度优先搜索](https://github.com/openset/leetcode/tree/master/tag/depth-first-search/README.md)]  | Hard |
diff --git a/tag/tags.json b/tag/tags.json
index f7409d453..98cbeabd2 100644
--- a/tag/tags.json
+++ b/tag/tags.json
@@ -79,16 +79,16 @@
 		"Slug": "heap",
 		"TranslatedName": "堆"
 	},
-	{
-		"Name": "Bit Manipulation",
-		"Slug": "bit-manipulation",
-		"TranslatedName": "位运算"
-	},
 	{
 		"Name": "Sort",
 		"Slug": "sort",
 		"TranslatedName": "排序"
 	},
+	{
+		"Name": "Bit Manipulation",
+		"Slug": "bit-manipulation",
+		"TranslatedName": "位运算"
+	},
 	{
 		"Name": "Graph",
 		"Slug": "graph",