北京在古时曾有“大都”、“顺天”等多种名称,北平则是相当于省级行政划区的名称,辖境总在河南河北一带。它与北京城是两个不同概念。但在本世纪上半叶,北京曾改名北平。1928年6月20日国民党中央政治会议第145次会议议决改北京为北平,即日起实行,至1949年9月27日人民政协会议 In ancient times, Beijing had many names such as “Dadu”, “Shuntian”, and Peiping was equivalent to the name of the provincial administrative district. The territory under its administration was always in the area of ​​Hebei in Henan Province. It is two different concepts with Beijing. But in the first half of this century, Beijing was renamed Peiping. On June 20, 1928, the 145th meeting of the Kuomintang Central Political Council decided to change Beijing to Beiping, which will be implemented with effect from now until September 27, 1949.