PING ai2559253679.cn.gongchang.com (106.52.20.19) 56(84) bytes of data.
64 bytes from 106.52.20.19 (106.52.20.19): icmp_seq=1 ttl=52 time=247 ms
64 bytes from 106.52.20.19 (106.52.20.19): icmp_seq=2 ttl=52 time=246 ms
64 bytes from 106.52.20.19 (106.52.20.19): icmp_seq=3 ttl=52 time=249 ms

--- ai2559253679.cn.gongchang.com ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 1999ms
rtt min/avg/max/mdev = 246.137/247.745/249.913/1.642 ms