PING zhanshi.zzy.cn (156.240.122.45) 56(84) bytes of data.
64 bytes from 156.240.122.45 (156.240.122.45): icmp_seq=1 ttl=54 time=260 ms
64 bytes from 156.240.122.45 (156.240.122.45): icmp_seq=2 ttl=54 time=260 ms
64 bytes from 156.240.122.45 (156.240.122.45): icmp_seq=3 ttl=54 time=260 ms

--- zhanshi.zzy.cn ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2002ms
rtt min/avg/max/mdev = 260.790/260.848/260.945/0.593 ms