PING www.51efu.cn (120.78.147.23) 56(84) bytes of data.
64 bytes from 120.78.147.23 (120.78.147.23): icmp_seq=1 ttl=116 time=190 ms
64 bytes from 120.78.147.23 (120.78.147.23): icmp_seq=2 ttl=116 time=187 ms
64 bytes from 120.78.147.23 (120.78.147.23): icmp_seq=3 ttl=116 time=187 ms

--- www.51efu.cn ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2002ms
rtt min/avg/max/mdev = 187.778/188.683/190.475/1.362 ms