diff --git a/Code/Day 39.ipynb b/Code/Day 39.ipynb
index 6213179..70999cd 100644
--- a/Code/Day 39.ipynb	
+++ b/Code/Day 39.ipynb	
@@ -60,8 +60,8 @@
    "metadata": {},
    "source": [
     "## 下载mnist数据\n",
-    "keras默认从https://storage.googleapis.com/tensorflow/tf-keras-datasets/mnist.npz下载，但国内很难连上，\n",
-    "可以参考http://www.cnblogs.com/shinny/p/9283372.html。手动下载mnist.npz，然后修改mnist.py中的引用路径。\n",
+    "keras默认从(https://storage.googleapis.com/tensorflow/tf-keras-datasets/mnist.npz)下载，但国内很难连上，\n",
+    "可以参考(http://www.cnblogs.com/shinny/p/9283372.html)。手动下载mnist.npz，然后修改mnist.py中的引用路径。\n",
     "如果找不到mnist.py，可以用everthing搜索。\n",
     "\n",
     "mnist.npz已上传到datasets文件夹，可从[这里]()下载。"