PING www.chengrenpian.cc (104.21.41.170) 56(84) bytes of data.
64 bytes from 104.21.41.170 (104.21.41.170): icmp_seq=1 ttl=59 time=5.56 ms
64 bytes from 104.21.41.170 (104.21.41.170): icmp_seq=2 ttl=59 time=5.31 ms
64 bytes from 104.21.41.170 (104.21.41.170): icmp_seq=3 ttl=59 time=5.29 ms

--- www.chengrenpian.cc ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2003ms
rtt min/avg/max/mdev = 5.296/5.391/5.563/0.148 ms