吳士連
The primary historical source for the sisters is the 5th century "Book of the Later Han" compiled by historian Fan Ye, which covers the history of the Han Dynasty from 6 to CE 189. The secondary source, but the primary popular source, is the "Đại Việt sử ký toàn thư" (Complete Annals of Dai Viet) compiled by Ngô Sĩ Liên under the order of the Emperor Lê Thánh Tông and finished in 1479.