Beijing (Benjin, Beijin, Peking) is the capital of People Republic of China and the second largest city in China after Shanghai. It is also the oldest city in China. In fact there is even a term Peking man (Sinanthropus pekinensis (currently Homo erectus pekinensis), an example of Homo erectus) refering to group of fossil specimen discovered in the area in 1920th, which make settlements dated as late as 250000 years ago.
However, Beijing is mentioned as capital of China only during state of Yan (5th century B.C.). And at that moment it was called Ji