Does the questioner want to ask, "What is the authentic name of the song that old Beijingers eat and sing?" "Old Beijing". According to a query on QQ Music, the song “Old Beijing” sung by an online singer is an authentic version of the song “Old Beijingers Eat and Play”. The excerpt from the lyrics of "Old Beijing" is: Old Beijing is a small place. You can wander around the four or nine cities and take a look at the front door building. It is called an authentic place.