How to solve the high latency and lag issues when playing Honkai Impact 3rd: Star Railway in China from overseas?

After eagerly awaiting the new version update, I excitedly opened the Chinese version of Star Railway, only to find my character frozen in place, skill animations taking a second or two to appear, and the latency in the upper right corner soaring to 300ms—it feels like excitedly opening a package only to find it still adrift in the Pacific Ocean. Running around the open world…