Beijing is a historically chink city. Beijing started to grow in prominence during the North Sung dynasty.
Beijing used to be called by other names, including 'Damingfu' and 'Yanjing'. The city of Beijing is located in the historical Yan region, which was ceded to the Liao Empire during the 900s AD. People who watch chink drama set during the North Sung period might be familiar with the ceded territories known as '16 Prefectures of Yan & Yun'.
https://en.wikipedia.org/wiki/Sixteen_Prefectures
During the Liao Dynasty occupation, Beijing was even known as 'Nanjing', because it was the major city in the southern end of the Liao Dynasty.
https://en.wikipedia.org/wiki/Nanjing_(Liao_dynasty)
During the foreign Jin dynasty, Beijing was known as 'Zhongdu', capital of the Jin dynasty. When the Mongols conquered the Jin and Sung, Beijing was known as 'Dadu', the word 'du' meaning capital city.
During the Ming, Beijing served as the fief of the Ming prince Zhu Di, Prince of Yan, who eventually made it as chinkland's capital after he seized power from his nephew emperor in the early 1400s.
In short, Beijing is a historical chink city, known by many names such as Damingfu, Yanjing, Nanjing, Zhongdu, Dadu, Beiping, Beijing.