PING www.zhrenliu.com (43.228.77.21) 56(84) bytes of data.
64 bytes from 43.228.77.21 (43.228.77.21): icmp_seq=1 ttl=56 time=279 ms
64 bytes from 43.228.77.21 (43.228.77.21): icmp_seq=2 ttl=56 time=278 ms
64 bytes from 43.228.77.21 (43.228.77.21): icmp_seq=3 ttl=56 time=278 ms

--- www.zhrenliu.com ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 1999ms
rtt min/avg/max/mdev = 278.020/278.690/279.767/0.769 ms