PING jiankang99.df0.cn (156.250.220.156) 56(84) bytes of data.
64 bytes from 156.250.220.156 (156.250.220.156): icmp_seq=1 ttl=52 time=239 ms
64 bytes from 156.250.220.156 (156.250.220.156): icmp_seq=2 ttl=52 time=242 ms
64 bytes from 156.250.220.156 (156.250.220.156): icmp_seq=3 ttl=52 time=242 ms

--- jiankang99.df0.cn ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2003ms
rtt min/avg/max/mdev = 239.899/241.902/242.954/1.526 ms