How long does it take to take the train from Harbin to Huangshan?

My wedding trip was to get to Huangshan. I took train T244 from Harbin to Hefei. The journey took about 22 to 3 hours. Then I chose to take a long-distance trip to Huangshan with a travel company from Hefei (after all, it is my first time to go there, so a group tour is more suitable). If you take a train from Hefei to Huangshan, it usually takes six or seven hours, and it feels not as fast as a car. There are also direct buses to Hefei, at Hefei East Bus Station, and the whole journey is high-speed. Passing by Tongling Yangtze River Bridge, Tangkou and Tunxi. It takes about four hours to reach Huangshan.