How to get to Lansha Haili and Wenyu Mine in Chibi Paris?

Out of Baishan Pavilion, head for Datu and Wenyu Mine. If you see a big stone wall blocking you, you will find a small opening along it. There is a pile of salamanders in the open air. If you go inside, there is a platform and a slope on the right hand side, you will find an entrance hole (a downward slope hole) and enter Wenyu Mine.