Question: Are both Hao Jie and Mai Thúc Loan from the same country?
Sentence (from "Mai Thúc Loan"): Mai Thúc Loan (or Mai Huyền Thành (梅玄成), titled Mai Hắc Đế (梅黑帝, literally "Mai the Black Emperor"), was the local leader of the uprising in 722 AD against the rule of the Tang dynasty in the provinces of Hoan Châu and Ái Châu (now Thanh Hóa and Nghệ An of Vietnam).
Relevant evidence: Yes