PING homepage.fudan.edu.cn (175.186.248.18) 56(84) bytes of data.
64 bytes from 175.186.248.18 (175.186.248.18): icmp_seq=1 ttl=52 time=265 ms
64 bytes from 175.186.248.18 (175.186.248.18): icmp_seq=2 ttl=52 time=251 ms
64 bytes from 175.186.248.18 (175.186.248.18): icmp_seq=3 ttl=52 time=262 ms

--- homepage.fudan.edu.cn ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2000ms
rtt min/avg/max/mdev = 251.897/260.018/265.812/5.914 ms