Which city does Zhenfeng County in Guizhou Province belong to?

Buyi and Miao Autonomous Prefecture in southwest Guizhou.

According to Baidu Encyclopedia, Zhenfeng County belongs to Buyi and Miao Autonomous Prefecture in the southwest of Guizhou Province, bordering Zhenning Buyi and Miao Autonomous County and Wangmo County in the east, Anlong County and Ceheng County in the south, Xingren County in the west and Guanling Buyi and Miao Autonomous County in the north. Zhenfeng County was founded in the Zhenguan period of the Tang Dynasty, and there are scenic spots such as Twin Breast Peaks in the territory.