PING www.yunmenyifang.com (104.21.2.174) 56(84) bytes of data.
64 bytes from 104.21.2.174 (104.21.2.174): icmp_seq=1 ttl=59 time=4.89 ms
64 bytes from 104.21.2.174 (104.21.2.174): icmp_seq=2 ttl=59 time=4.72 ms
64 bytes from 104.21.2.174 (104.21.2.174): icmp_seq=3 ttl=59 time=4.64 ms

--- www.yunmenyifang.com ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2003ms
rtt min/avg/max/mdev = 4.648/4.756/4.895/0.103 ms