PING pro-www.shanghaicaidi.com (104.21.86.148) 56(84) bytes of data.
64 bytes from 104.21.86.148 (104.21.86.148): icmp_seq=1 ttl=60 time=7.11 ms
64 bytes from 104.21.86.148 (104.21.86.148): icmp_seq=2 ttl=60 time=4.23 ms
64 bytes from 104.21.86.148 (104.21.86.148): icmp_seq=3 ttl=60 time=4.35 ms

--- pro-www.shanghaicaidi.com ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2001ms
rtt min/avg/max/mdev = 4.233/5.234/7.113/1.330 ms