When water gets into the space between the rock and base or even the interior of the base,there will occur the solution,crystallization and accumulation of salt again and again,thus destroying the structure of murals.

• 当岩层和地仗层之间甚至地仗层内进入了水，反复发生着盐的溶解，结晶，聚积时，就会破坏壁画的结构。