Introduction to the Sanxian Yamen: The Sanxian Yamen is located in Gulong Temple. It was built in the Qing Dynasty and was originally the Zongye Yamen. During the Republic of China, it was changed to the Sanxian Yamen. Historically, Huanglongxi belonged to the "Golden Triangle" area. Civil and economic disputes and banditry troubled the three counties (Huayang, Pengshan, and Renshou), so the three county government offices were established. The Sanxian Yamen is the only three-county Yamen preserved in the country. There is a footprint in the Yamen, which is said to be the junction of Huayang and Renshou counties in ancient times. Now, an exhibition of cultural relics unearthed from Huanglong River and folk cultural relics has been opened on the original site of the Yamen. There are many ancient court utensils in the Yamen.