diff --git a/choose-cn.sh b/choose-cn.sh
index 21d8c08..e0aeb01 100644
--- a/choose-cn.sh
+++ b/choose-cn.sh
@@ -44,7 +44,7 @@ do
     echo "Starting download test for $ip"
     # 使用 curl 命令进行下载测试
     start_time=$(date +%s.%N)
-    curl -s --resolve speed.cloudflare.com:443:"$ip" https://speed.cloudflare.com/__down?bytes=100000000 -o /dev/null --connect-timeout 5
+    curl -s --resolve speed.cloudflare.com:443:"$ip" https://speed.cloudflare.com/__down?bytes=10000000 -o /dev/null --connect-timeout 5
     curl_status=$?
     end_time=$(date +%s.%N)
     elapsed_time=$(echo "$end_time - $start_time" | bc)
@@ -52,7 +52,7 @@ do
     # 检查 curl 命令的返回状态
     if [ $curl_status -eq 0 ]; then
         # 计算下载速度
-        download_speed=$(echo "scale=2; (100000000*8)/(($elapsed_time)*1000000)" | bc)
+        download_speed=$(echo "scale=2; (10000000*8)/(($elapsed_time)*1000000)" | bc)
         
         # 如果下载速度小于 50Mbps
         if (( $(echo "$download_speed < 50" | bc -l) )); then