PING readingteacher.cn (154.93.183.184) 56(84) bytes of data.
64 bytes from 154.93.183.184 (154.93.183.184): icmp_seq=1 ttl=118 time=231 ms
64 bytes from 154.93.183.184 (154.93.183.184): icmp_seq=2 ttl=118 time=230 ms
64 bytes from 154.93.183.184 (154.93.183.184): icmp_seq=3 ttl=118 time=230 ms

--- readingteacher.cn ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2002ms
rtt min/avg/max/mdev = 230.330/230.574/231.020/0.315 ms