PING elektrische-xuexuefei.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=256 ms
64 bytes from 106.52.20.19 (106.52.20.19): icmp_seq=2 ttl=52 time=256 ms
64 bytes from 106.52.20.19 (106.52.20.19): icmp_seq=3 ttl=52 time=257 ms

--- elektrische-xuexuefei.cn.gongchang.com ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2002ms
rtt min/avg/max/mdev = 256.118/256.731/257.420/0.534 ms