My friend and I planned to stay in wutaishan for 30days. What is the validity for the admission fee?

I heard that the ticket is valid for two days. If you want to enter the scenic area for the second time, you need to register at the gate before leaving. If staying inside for 30 days without existing, you just need to pay the entrance fee once.

Anyway, according to your demand, for accommodation, you may stay at Buddha Greeting Hotel (Yingfo Hotel) beside the South Mountain Temple at Nanpo Village, Taihuai Town, at the foot of the mountain. :)