Because it was built in the mountainside, large area of the wall and stand like a rock, make the building as if combined with hills, magnificence.

Resuing is used for mining the steeply dipping narrow-vein in the Shangzhou Gold Mine of Shaanxi, has made great success and excellent economic effect.

For the gently inclined and extremely-thin vein, the mining methods including breasting method, waste-lifting stoping, resue stoping, long walling were usually adopted.