Hong Kong is a very densely populated city. Housing is always a problem to be solved. Most of the old buildings and Tong Lau buildings have to be replaced by high rises residential buildings in order to meet the housing needs of the people. These sketches of old buildings and Tong Laus were done in different areas of Hong Kong. They have all served Hong Kong people for decades. Hope these urban sketches can keep a record and preserve the beauty of these old buildings.