I appreciate that it's not working for your use case but it's unfortunate that you dismiss the experience of others. And i am not chinese, I am European. Thanks for your feedback anyway.

I tried Gemini 3.1 pro once to implement a previously designed 7-phase plan. it only implemented a quarter of the plan before stopping, the code didnt even compile because half of the scaffolding was missing. it then confidently said everything was done.

Codex and GLM didnt have any issue following the exact same plan and getting a working app. So I would argue Gemini is the failure here.

Sounds like you two are taking pass each other. PDF work is a specific niche that according to you it fails, the other person say it's good at coding.