PING www.longduwuliu.com (104.21.38.77) 56(84) bytes of data.
64 bytes from 104.21.38.77 (104.21.38.77): icmp_seq=1 ttl=60 time=5.29 ms
64 bytes from 104.21.38.77 (104.21.38.77): icmp_seq=2 ttl=60 time=3.99 ms
64 bytes from 104.21.38.77 (104.21.38.77): icmp_seq=3 ttl=60 time=4.05 ms

--- www.longduwuliu.com ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2003ms
rtt min/avg/max/mdev = 3.991/4.443/5.290/0.603 ms