PING yifuqiankun.com (104.21.61.165) 56(84) bytes of data.
64 bytes from 104.21.61.165 (104.21.61.165): icmp_seq=1 ttl=60 time=5.08 ms
64 bytes from 104.21.61.165 (104.21.61.165): icmp_seq=2 ttl=60 time=4.71 ms
64 bytes from 104.21.61.165 (104.21.61.165): icmp_seq=3 ttl=60 time=4.52 ms

--- yifuqiankun.com ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2003ms
rtt min/avg/max/mdev = 4.529/4.777/5.086/0.244 ms