First of all, hidden weapons of Wudang shampoos mainly with physical strength and posture, not with strength and concentration, and has little (or no) aura. Now is the age of attributes, it is ok to hit monsters with internal skills, and the rest are mainly attributes.

Second, Shen can brush the box himself and keep it slowly. Go to Luoyang Yan Qing to wash attributes, wash strength and concentration to 0, and add some aura, mainly called physical strength and posture.

For players who don't have too many YB, it's best to open more boxes, save them slowly and wash them slowly.

You don't need to wash it with a bath flint, which is useless for your hidden weapon attribute points.