We plan to stay on huangshan mountain for 1 night and next day we have to take flight back to shanghai on 22.00 so

If we go down from huangshan mountain in the afternoon, can we go to hongcun and stay in the afternoon until late evening and take taxi to Tunxi airport and back to Shanghai??

What time we can stay in Hongcun until it closes and is it hard to find taxi form Hongcun to Tunxi at night??

Many thanks,