PING www.chengxinbj.com (156.235.213.238) 56(84) bytes of data.
64 bytes from 156.235.213.238 (156.235.213.238): icmp_seq=2 ttl=57 time=243 ms

--- www.chengxinbj.com ping statistics ---
3 packets transmitted, 1 received, 66% packet loss, time 2039ms
rtt min/avg/max/mdev = 243.987/243.987/243.987/0.000 ms