1 or 2 days to explore Yixian County and Shexian County?

We will be based in Tangkou town. After exploring Mt Huangshan we would like to spend 1 or 2 days to explore Yixian County ( Hongcun village, Naping, xidi) and Shexian County ( Stone Archway), Huangshan city and Tunxi Ancient street.

1- Please let us know in what order to visit the above areas?
2- Is it possible to go with bus? or should we hire a Taxi to visit the above areas in 1 or 2 day trips from Tangkou?
3- Any other interesting areas that we are missing?
4- Any other thing to see in tunxi besides the ancient street?