A place name plus 人 means someone from there: 北京人, 上海人, 四川人. An old Beijinger, from a family that has lived in the city for generations, is a 老北京人.
history
The first Peking Man skull was found in 1929 at 周口店, southwest of Beijing; its full name is 北京猿人. Almost all the original fossils went missing in 1941, while being shipped out of China during the war, and have never been found.
