《新唐书·列传·卷一百四十五》
诏令集中战死者葬在柳城，用太牢祭奠。皇帝前往哭悼，众臣也都流泪。
诏集战骸葬柳城，祭以太牢，帝临哭，从臣皆流涕。
By imperial decree, the dead soldiers were buried together in Liucheng, with lavish offerings of food and drink. The emperor himself visited the burial site to mourn the dead and weep. All the courtiers also wept.