diff --git a/2025-11.22.1/11.21.1.D1-full.ipynb b/2025-11.22.1/11.21.1.D1-full.ipynb
index 85937d6..b3f688a 100644
--- a/2025-11.22.1/11.21.1.D1-full.ipynb
+++ b/2025-11.22.1/11.21.1.D1-full.ipynb
@@ -20,7 +20,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 1,
+   "execution_count": null,
    "id": "d2112ca7-0c05-4332-87b5-f473f8c3fcd0",
    "metadata": {
     "tags": []
@@ -28,6 +28,7 @@
    "outputs": [],
    "source": [
     "\n",
+    "# 导入库\n",
     "import numpy as np\n",
     "import pandas as pd\n",
     "import matplotlib.pyplot as plt\n",