Linux VPS backhaul routing testing tool: traceroute

In the process of using or selecting a VPS, we often talk about line problems. The outbound route is easy to deal with. You can directly trace the server IP locally or at other target locations. If we test the return route on the server, we may use this Tool: traceroute, a line testing tool running on Linux systems.
First, we install the tools:
# CentOS:

INserv: $4/month OpenVZ-512MB/20GB/500GB Hong Kong & Malaysia

INserv is a relatively unfamiliar foreign VPS hosting provider. It uses the .com.br suffix domain name and the website language is Portuguese. The specific time for launching VPS business is unknown, but the merchant recently sent a "New Servers: Hong Kong with direct route to China" email, I tested the IP domestic ping value is good, the monthly payment starts from as low as 4 US dollars.