Bus to Tangkou from Shanghai

Hello. I am traveling from Shanghai to Mt. Huangshan on December 25th. I have read numerous places that I can take a bus direct from Shanghai South Bus Station to Tangkou/Xin Gou Xian Bus Station. However I have checked the websites to purchase tickets and I can only find tickets to what is called Huangshan South Tourism Center (I believe this is in Tunxi). Can someone please clarify if the Huangshan South Tourism Center is indeed in Tunxi? The official website of Shanghai South Bus Station does not seem to show a direct bus to the Yellow Mountain.

Thank You!