PING ly251.lyqingfeng.cn (120.48.59.226) 56(84) bytes of data.
64 bytes from 120.48.59.226 (120.48.59.226): icmp_seq=1 ttl=51 time=286 ms
64 bytes from 120.48.59.226 (120.48.59.226): icmp_seq=2 ttl=51 time=283 ms
64 bytes from 120.48.59.226 (120.48.59.226): icmp_seq=3 ttl=51 time=284 ms

--- ly251.lyqingfeng.cn ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2000ms
rtt min/avg/max/mdev = 283.951/284.850/286.502/1.321 ms