Gao Pian
Đại La was constructed by "jiedushi" Gao Pian in 866. It was the seat of Songping County during the Tang dynasty, and was capital of the Tĩnh Hải quân. In 1010, Lý Công Uẩn decided to move his capital away from the cramped Hoa Lư (present-day Ninh Bình). Đại La was favored because of its central and convenient location, defensible terrain and relatively dry climate. According to the "Đại Việt sử ký toàn thư", a Yellow Dragon appeared near Lý Công Uẩn's boat when he passed by Đại La. The sighting was considered as greatly auspicious by his ministers. Subsequently, the city was renamed Thăng Long ("rising dragon").