PING dz-smscold.cn.gongchang.com (43.136.57.228) 56(84) bytes of data.
64 bytes from 43.136.57.228 (43.136.57.228): icmp_seq=1 ttl=50 time=252 ms
64 bytes from 43.136.57.228 (43.136.57.228): icmp_seq=2 ttl=50 time=251 ms
64 bytes from 43.136.57.228 (43.136.57.228): icmp_seq=3 ttl=50 time=251 ms

--- dz-smscold.cn.gongchang.com ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2000ms
rtt min/avg/max/mdev = 251.904/252.058/252.312/0.607 ms