Can nodes in two different countries be interconnected?

There are not many DERO mining in my area, which has caused a problem. No matter how many peers I connect, my network latency with these peers will be relatively large. So I want to establish a relay node between my node and the area where DERO mining is developed. I think this should solve the problem that I can’t submit to the network in time after I find the mini block.

The network delay between me and the developed area of DERO mining is 300ms, the network delay between me and the relay node is 50ms, and the network delay between the relay node and the developed area of DERO mining is 50ms. In this way, can I reduce the network delay to 100ms?

Is this feasible?

Yes, Runrelay node daemon with following options: :
./derod-linux-amd64 --add-priority-node= --add-priority-node=

Keep us updated, so that we can try decrease your latency further…

You have to use proxy which supports UDP proxy.
See GitHub - snail007/goproxy: 🔥 Proxy is a high performance HTTP(S) proxies, SOCKS5 proxies,WEBSOCKET, TCP, UDP proxy server implemented by golang. Now, it supports chain-style proxies,nat forwarding in different lan,TCP/UDP port forwarding, SSH forwarding.Proxy是golang实现的高性能http,https,websocket,tcp,socks5代理服务器,支持内网穿透,链式代理,通讯加密,智能HTTP,SOCKS5代理,黑白名单,限速,限流量,限连接数,跨平台,KCP支持,认证API。

Can a proxy server that functions as Socks5 and supports UDP protocol?

As already discussed --proxy will not solve your issue.