Chengde, formerly known as Jehol and Rehe, is a prefecture-level city in Hebei province, situated about 225 kilometres (140 mi) northeast of Beijing. It is best known as the site of the Mountain Resort, a vast imperial garden and palace formerly used by the Qing emperors as summer residence. Its local dialect is also known for being the closest to Standard Chinese, which took several inspirations from the Chengde dialect. The permanent resident population is approximately 3,473,200 in 2017. At the end of 2024, the total resident population of the city was 3,285,700, a decrease of 16,500 from the end of the previous year. The urbanization rate of the resident population is 59.77%.