Which station Hangzhou or Hangzhou east to Hong Kong via Jinhua?

Hi I am hoping to take the overnight train in a few hours to Hong Kong. I would like to confirm which station do I go to? Hangzhou or Hangzhou East? The trip is via Jinhau to Hong Kong.

Also. If I have a heavy bag. How do I check it in and will it be automatically transferred to Hong Kong?

Thanks,

Erik