(1) Don't over-exploit. The ability to visit cultural relics is certain. Beyond this ability, cultural relics will definitely be damaged. This kind of damage may be small and imperceptible, but by the time you find it, I'm afraid you have lost the possibility of remedy.
(2) During the maintenance and expansion of cultural relics and historic sites, the original appearance should be maintained, and modern elements cannot be easily added. It is best to "repair the old as the old". Personally, I think that the escalator built in front of Leifeng Tower ruined the taste of the whole site of Leifeng Tower. The builder may be well-intentioned at first, but the result is unacceptable.
(3) Protecting cultural relics cannot be solved by the government alone. It depends on everyone's awareness of protection. When we stroll in Bai Causeway and Su Causeway and enjoy the beautiful scenery of the West Lake, our casual actions, such as spitting and littering, will destroy the protected cultural relics around us. Therefore, raising the awareness of the whole people is the key.