They can tell the viewers how the mainland goes about digging at these sites and protecting these relics. Have their policies met with any difficulties? Do they need any help from society in the mainland or from abroad?
可以告訴觀眾，大陸是如何挖掘、保護古蹟；他們的政策、有沒有遭遇什麼困難，需不需要社會、或者外人的協助？