Wan Chai Post Office was first seen halfway down the road from Central to the left and right. Hong Kong Island is a very magical place, it has the world's largest density of office buildings and a variety of tall modern buildings, but at the same time, it also retains a lot of small, old buildings with a strong sense of history, and these old buildings are in place, almost unimportant to pass by so missed. Fortunately, roadside signs also give a slight description of where and where there are monuments, but when you really stand in front of these monuments, it's difficult to find detailed instructions (sometimes at the door, sometimes only in the travel brochure). For example, the Hongsheng Ancient Temple, a small one, looks inside from the door. It is so densely packed with gods and Buddhas that I dare not enter it, because I do not know whether it is for tourists or private collective ownership.