Claim: Luanping County, regarded as the "home of Standard Chinese",  is a county in Chengde, northeastern Hebei Province, China with a total population of 293,200 as of 2017.
Evidence: Luanping County is regarded as the "home of Standard Chinese", due to the Standard Chinese being based on the local dialect. Chengde Luanping County (simplified Chinese: 滦平县; traditional Chinese: 灤平縣; pinyin: Luánpíng Xiàn) is a county of northeastern Hebei Province, with the Great Wall of China demarcating its border with Miyun District, Beijing to the southwest. It is under the administration of Chengde City, and as of 2017, has a population of 293,200 residing in an area of 3,195 km (1,234 sq mi).