PING guangdong.pfzyc.com (156.239.8.170) 56(84) bytes of data.
64 bytes from 156.239.8.170 (156.239.8.170): icmp_seq=1 ttl=56 time=200 ms
64 bytes from 156.239.8.170 (156.239.8.170): icmp_seq=2 ttl=56 time=199 ms
64 bytes from 156.239.8.170 (156.239.8.170): icmp_seq=3 ttl=56 time=199 ms

--- guangdong.pfzyc.com ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2003ms
rtt min/avg/max/mdev = 199.686/199.860/200.172/0.221 ms