PING www.xiantianan.cn (121.204.244.43) 56(84) bytes of data.
64 bytes from 121.204.244.43 (121.204.244.43): icmp_seq=1 ttl=112 time=278 ms
64 bytes from 121.204.244.43 (121.204.244.43): icmp_seq=2 ttl=112 time=277 ms
64 bytes from 121.204.244.43 (121.204.244.43): icmp_seq=3 ttl=112 time=277 ms

--- www.xiantianan.cn ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2001ms
rtt min/avg/max/mdev = 277.791/277.878/278.030/0.107 ms