A couple of days ago, I met Dr Young Ng of the Association for Geoconservation on Cheung Chau. He and a couple of colleagues had been checking graffiti on rocks around the coast, such as Reclining Rock above Po Yue Wan (near Cheung Po-tsai Cave), and Vase Rock (Fa Peng Shek). I later sent him some contacts for Cheung Chau; he replied with following email:
