It’s hard to tell for me what the best approach is when not speaking Chinese. I think you should try to understand the different ways in which LT can detect errors and then see what works best:
- hand-written rules - Development Overview - LanguageTool Wiki
- statistics - Finding errors using Big Data - LanguageTool Wiki
- ML - Neural Network Rules
- Java - maybe not documented in the wiki, but there are many examples in the code (in the
rules/xxfolder of each language, withxxbeing the language code)