PING ertong-ji.com (104.21.87.131) 56(84) bytes of data.
64 bytes from 104.21.87.131 (104.21.87.131): icmp_seq=1 ttl=60 time=5.33 ms
64 bytes from 104.21.87.131 (104.21.87.131): icmp_seq=2 ttl=60 time=4.14 ms
64 bytes from 104.21.87.131 (104.21.87.131): icmp_seq=3 ttl=60 time=4.10 ms

--- ertong-ji.com ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2003ms
rtt min/avg/max/mdev = 4.109/4.528/5.335/0.573 ms