The Dongcheng District of Beijing covers the eastern half of Beijing's urban core, including all of the eastern half of the Old City inside of the 2nd Ring Road with the northernmost extent crossing into the area within the 3rd Ring Road. Its 40.6 km2 area is further subdivided into 17 subdistricts.
Settlement in the area dates back over a millennium. It did not formally become a district of the city until the establishment of the Republic of China in 1911. The name Dongcheng was first given to it in a 1958 reorganization; it has existed in its current form since a 2010 merger with the former Chongwen District to its south.
Wikipedia https://en.wikipedia.org/wiki/Dongcheng_District,_Beijing
Coordinates 39°55'36.844" N 116°24'36.142" E