diff --git a/README.md b/README.md
new file mode 100644
index 0000000..cf26cc4
--- /dev/null
+++ b/README.md
@@ -0,0 +1,47 @@
+# denyip
+
+大陆服务器禁止国外IP访问  
+
+## build
+
+~~~bash
+# Debian System
+apt install build-essential
+apt install golang
+apt install tcpdump procps iptables ipset
+
+root@NIUYULING:/mnt/c/Users/root/Desktop/git.aixiao.me/DenyIP# make clean; make
+rm -rf denyip ipquery
+rm -rf main.o common.o ip2region/ip2region.o ip2region/xdb_searcher.o qqwry/qqwry.o
+gcc -g -Os -Wall -Iip2region -Iqqwry -c main.c -o main.o
+gcc -g -Os -Wall -Iip2region -Iqqwry -c common.c -o common.o
+gcc -g -Os -Wall -Iip2region -Iqqwry -c ip2region/ip2region.c -o ip2region/ip2region.o
+gcc -g -Os -Wall -Iip2region -Iqqwry -c ip2region/xdb_searcher.c -o ip2region/xdb_searcher.o
+gcc -g -Os -Wall -Iip2region -Iqqwry -c qqwry/qqwry.c -o qqwry/qqwry.o
+gcc -g -Os -Wall -Iip2region -Iqqwry -o denyip main.o common.o ip2region/ip2region.o ip2region/xdb_searcher.o qqwry/qqwry.o -lm -static
+root@NIUYULING:/mnt/c/Users/root/Desktop/git.aixiao.me/DenyIP#
+~~~
+
+### help
+
+~~~bash
+
+root@NIUYULING:/mnt/c/Users/root/Desktop/git.aixiao.me/DenyIP# ./denyip -h
+      DenyIp
+Linux system firewall, reject non-Chinese IP
+Email: aixiao@aixiao.me
+Version: 0.1
+Usage: ./denyip [-i eth0|-h|-?] [start|stop]
+Options:
+      stop    Enable firewall rules
+      start   Disable firewall rules
+Parameters:
+      -h|?    Help info
+      -i      interface name
+
+
+root@niuyuling:~/DenyIP# killall denyip     # 关闭
+root@niuyuling:~/DenyIP# ./denyip -i eth0   # 启动
+root@niuyuling:~/DenyIP# ./denyip start     # Iptables 规则打开
+root@niuyuling:~/DenyIP# ./denyip stop      # Iptables 规则关闭
+~~~
diff --git a/denyip b/denyip
index 1fbbe51..c02ca96 100644
Binary files a/denyip and b/denyip differ
diff --git a/main.c b/main.c
index 6837943..e69d163 100644
--- a/main.c
+++ b/main.c
@@ -307,7 +307,7 @@ int main(int argc, char *argv[])
                             perror("popen failed");
                             return 1;
                         }
-                        
+
                         // 创建足够大的缓冲区来存储命令输出
                         char buffer[1024 * 2]; // 2KB 缓冲区
                         size_t bytesRead = fread(buffer, 1, sizeof(buffer) - 1, fp);
@@ -349,6 +349,7 @@ int main(int argc, char *argv[])
         iteration++;
 
         if (iteration >= 3600) {
+            iteration = 0;
             printf("准备重启进程...\n");
             restart_process(pid1, pid2, argv);
         }
diff --git a/main.o b/main.o
index 347f7e4..c0c112f 100644
Binary files a/main.o and b/main.o differ