PING www.yijietesi.icoc.cc (172.67.159.193) 56(84) bytes of data.
64 bytes from 172.67.159.193 (172.67.159.193): icmp_seq=1 ttl=59 time=5.37 ms
64 bytes from 172.67.159.193 (172.67.159.193): icmp_seq=2 ttl=59 time=4.93 ms
64 bytes from 172.67.159.193 (172.67.159.193): icmp_seq=3 ttl=59 time=4.98 ms

--- www.yijietesi.icoc.cc ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2002ms
rtt min/avg/max/mdev = 4.938/5.096/5.371/0.203 ms