PING duorui.com.cn (152.32.175.174) 56(84) bytes of data.
64 bytes from 152.32.175.174 (152.32.175.174): icmp_seq=1 ttl=48 time=257 ms
64 bytes from 152.32.175.174 (152.32.175.174): icmp_seq=2 ttl=48 time=257 ms
64 bytes from 152.32.175.174 (152.32.175.174): icmp_seq=3 ttl=48 time=257 ms

--- duorui.com.cn ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2002ms
rtt min/avg/max/mdev = 257.366/257.585/257.979/0.648 ms