There are at least 6 theories about the birthplace of the Dong song: "the Liping Cave Zhuping theory; the Liping Three Dragons theory; the Congjiang Jiudong theory; the Congjiang Pass
dong theory; Rongjiang Zaima said; Jingyuan said in ancient times."
Among them, only the 'Jingyuan theory' and the 'Three Dragons theory' have historical documents. Among the other theories, except for the Jiudong theory, which has some truth, the rest have no decent evidence and are all conjectures. That’s all.
Note: Jingyuan was still the central settlement area of ??the Dong people until the Song Dynasty, which is today's Hongjiang, Tongtong and Jingzhou areas in Hunan.