PING jhskt.cn (121.42.68.9) 56(84) bytes of data.
64 bytes from 121.42.68.9 (121.42.68.9): icmp_seq=1 ttl=43 time=270 ms
64 bytes from 121.42.68.9 (121.42.68.9): icmp_seq=2 ttl=43 time=270 ms
64 bytes from 121.42.68.9 (121.42.68.9): icmp_seq=3 ttl=43 time=269 ms

--- jhskt.cn ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2002ms
rtt min/avg/max/mdev = 269.795/270.549/270.994/0.805 ms