PING pro-a13372106813.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=248 ms
64 bytes from 106.52.20.19 (106.52.20.19): icmp_seq=2 ttl=52 time=245 ms
64 bytes from 106.52.20.19 (106.52.20.19): icmp_seq=3 ttl=52 time=245 ms

--- pro-a13372106813.cn.gongchang.com ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2000ms
rtt min/avg/max/mdev = 245.614/246.503/248.264/1.309 ms