PING www.yptms.com.cn (104.21.81.190) 56(84) bytes of data.
64 bytes from 104.21.81.190 (104.21.81.190): icmp_seq=1 ttl=60 time=5.72 ms
64 bytes from 104.21.81.190 (104.21.81.190): icmp_seq=2 ttl=60 time=3.84 ms
64 bytes from 104.21.81.190 (104.21.81.190): icmp_seq=3 ttl=60 time=3.86 ms

--- www.yptms.com.cn ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2001ms
rtt min/avg/max/mdev = 3.845/4.477/5.720/0.880 ms