The picture map of the Huainan Royal Tombs has been uploaded. Channel 4 is the part in the upper right corner. A large section is in the dirt road. It is dark and it is really difficult to distinguish the direction.
After taking the elevator down, walk straight into the dirt road. Do not go back to the brick road, and never enter passage three from an entrance on the brick road.
After walking on a dirt road for a while, turn left at the first fork in the road
You will come out at the end and reach Wanqiu Mountain (I felt like I was coming from hell at the time) Came out hahaha)