Does the dialect of Shiquan County, Ankang City, southern Shaanxi belong to the southwest dialect? If it's a branch, what is it?

Before the Ming Dynasty, there were about 20,000-30,000 aborigines in Shiquan. After the Ming and Qing Dynasties, a large number of exiled prisoners were released, and immigrants increased greatly, which greatly increased the population of Shiquan. Some of these people came from Hunan, Guangdong, Guangxi, some from Sichuan, and later there were other locals. After hundreds of years of intermarriage and social interaction, Shiquan now has a special pronunciation, and his speech has a homophonic sound of Sichuan Huguang. Of course, people in Shiquan speak Mandarin with leverage.