Huangshan Scenic Area (Tangkou) to Jiuhuashan

From internet search, I found that there are 2 buses every day (6.30 am, 1.30 pm) from Tangkou Bus Station to Jiuhuashan Bus Station. Is this time table still valid? Also, is Jiuhuashan Bus Station nearby Jiuhuashan Scenic Area Visitor Center? If not, how do we get to the Visitor Center? Thanks.