PING www.rumeng.cc (104.21.76.254) 56(84) bytes of data.
64 bytes from 104.21.76.254 (104.21.76.254): icmp_seq=1 ttl=60 time=4.80 ms
64 bytes from 104.21.76.254 (104.21.76.254): icmp_seq=2 ttl=60 time=4.27 ms
64 bytes from 104.21.76.254 (104.21.76.254): icmp_seq=3 ttl=60 time=4.21 ms

--- www.rumeng.cc ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2002ms
rtt min/avg/max/mdev = 4.218/4.435/4.808/0.264 ms