i will enter the wullingyuan entrace, how do i reach from there to the tianzi mountain?

No, you cannot go from the Wulingyuan Scenic area to Tianzi Mountain directly. They are different scenic spots, you need to go back to downtown area, and then take another bus to Tianzi Mountain.

Yes, it is closed for restoration now, but according to the report, it will begin to operation in this Oct.