PING 52yntc.com.cn (104.21.14.210) 56(84) bytes of data.
64 bytes from 104.21.14.210 (104.21.14.210): icmp_seq=1 ttl=60 time=6.04 ms
64 bytes from 104.21.14.210 (104.21.14.210): icmp_seq=2 ttl=60 time=3.95 ms
64 bytes from 104.21.14.210 (104.21.14.210): icmp_seq=3 ttl=60 time=4.02 ms

--- 52yntc.com.cn ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2001ms
rtt min/avg/max/mdev = 3.950/4.675/6.047/0.970 ms