PING www.pkupx.cn (154.86.181.251) 56(84) bytes of data.
64 bytes from 154.86.181.251 (154.86.181.251): icmp_seq=1 ttl=123 time=193 ms
64 bytes from 154.86.181.251 (154.86.181.251): icmp_seq=2 ttl=123 time=193 ms
64 bytes from 154.86.181.251 (154.86.181.251): icmp_seq=3 ttl=123 time=193 ms

--- www.pkupx.cn ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2003ms
rtt min/avg/max/mdev = 193.266/193.353/193.415/0.063 ms