diff --git a/codes/c/chapter_tree/array_binary_tree.c b/codes/c/chapter_tree/array_binary_tree.c
index 7cbadbdaa..4f6b5c010 100644
--- a/codes/c/chapter_tree/array_binary_tree.c
+++ b/codes/c/chapter_tree/array_binary_tree.c
@@ -6,12 +6,14 @@
 
 #include "../utils/common.h"
 
+/* 数组表示下的二叉树类 */
 struct arrayBinaryTree {
     vector *tree;
 };
 
 typedef struct arrayBinaryTree arrayBinaryTree;
 
+/* 构造函数 */
 arrayBinaryTree *newArrayBinaryTree(vector *arr) {
     arrayBinaryTree *newABT = malloc(sizeof(arrayBinaryTree));
     newABT->tree = arr;
diff --git a/codes/javascript/chapter_divide_and_conquer/hanota.js b/codes/javascript/chapter_divide_and_conquer/hanota.js
index 009d43253..92d3b6abf 100644
--- a/codes/javascript/chapter_divide_and_conquer/hanota.js
+++ b/codes/javascript/chapter_divide_and_conquer/hanota.js
@@ -28,7 +28,7 @@ function dfs(i, src, buf, tar) {
 }
 
 /* 求解汉诺塔 */
-function solveHanota(A, B, C) {
+function hanota(A, B, C) {
     const n = A.length;
     // 将 A 顶部 n 个圆盘借助 B 移到 C
     dfs(n, A, B, C);
@@ -44,7 +44,7 @@ console.log(`A = ${JSON.stringify(A)}`);
 console.log(`B = ${JSON.stringify(B)}`);
 console.log(`C = ${JSON.stringify(C)}`);
 
-solveHanota(A, B, C);
+hanota(A, B, C);
 
 console.log('圆盘移动完成后：');
 console.log(`A = ${JSON.stringify(A)}`);
diff --git a/codes/typescript/chapter_divide_and_conquer/hanota.ts b/codes/typescript/chapter_divide_and_conquer/hanota.ts
index e5f0c55fe..8ee26b7d0 100644
--- a/codes/typescript/chapter_divide_and_conquer/hanota.ts
+++ b/codes/typescript/chapter_divide_and_conquer/hanota.ts
@@ -28,7 +28,7 @@ function dfs(i: number, src: number[], buf: number[], tar: number[]): void {
 }
 
 /* 求解汉诺塔 */
-function solveHanota(A: number[], B: number[], C: number[]): void {
+function hanota(A: number[], B: number[], C: number[]): void {
     const n = A.length;
     // 将 A 顶部 n 个圆盘借助 B 移到 C
     dfs(n, A, B, C);
@@ -44,7 +44,7 @@ console.log(`A = ${JSON.stringify(A)}`);
 console.log(`B = ${JSON.stringify(B)}`);
 console.log(`C = ${JSON.stringify(C)}`);
 
-solveHanota(A, B, C);
+hanota(A, B, C);
 
 console.log('圆盘移动完成后：');
 console.log(`A = ${JSON.stringify(A)}`);
diff --git a/docs/chapter_preface/index.md b/docs/chapter_preface/index.md
index 39b1585a6..4307e17fd 100644
--- a/docs/chapter_preface/index.md
+++ b/docs/chapter_preface/index.md
@@ -9,5 +9,5 @@
 !!! abstract
 
     算法犹如美妙的交响乐，每一行代码都像韵律般流淌。
-
+    
     愿这本书在你的脑海中轻轻响起，留下独特而深刻的旋律。