Chinese Passport with Green Card traveling Austin-Beijing-Taipei

Hello, 

 

Thank you for taking time to answer me.

 

I have Chinese passport with green card. I am planning a trip from Austin-Beijing-Taipei-Austin.

 

1, I will get visa from Taiwan consulate in Houston 

2, which other document(s) do I need for my trip. I read that I need 大陆居民往来台湾通行证需为G签注(个人旅游)，及签注事由为( G签个人旅游）之通行证签注页

Do I need these documents, if so how can I get it?

 

Thanks a lot for your help