Làntǔ

Lantu was a small Sui tusi holding in the hill country south of Duyun, on the territory of present-day Sandu County, the Sui heartland. Its chiefs kept office through the Ming and early Qing as dependants of the Duyun native administration, until the Yongzheng reforms of 1734 turned the Lantu lands into the Sanjiaotun assistant magistrate's district under Dushan Subprefecture.