In the tenth month a gate was built at Mohwa-gun as a barrier against Japan; the wall circuit was 6,792 bo and forty-two thousand men were mobilized. (Samguk Yusa (Memorabilia of the Three Kingdoms) 紀異第二 孝成王)
Southeast Asia (4)
Mai Thuc Loan seized a prefecture, called himself the Black Emperor (Hắc Đế), and allied with Linyi, Zhenla, and others. (Đại Việt sử ký toàn thư 外紀卷之五 「壬戌，賊帥梅叔鸞㨿州，稱黑帝，外」)
Annam bandit chiefs Mei Shuluan and others attacked the prefectures and counties, so Yang Sixu was sent to suppress them. (Old Book of Tang (Jiu Tangshu), Annals 舊唐書 卷8 開元10年 8月)
In August 722, bandit chief Mei Shuyan and others of Annam attack and besiege prefectures and counties; Yang Sixu, General of the Biaoqi and eunuch, is sent to subdue them. (Zizhi Tongjian (Comprehensive Mirror) 권212 722년 항)
Sixu gathers more than 100,000 troops and young men, attacks by surprise and routs them, beheads Shuyan, piles up corpses to make a jingguan monument, and returns. (Zizhi Tongjian (Comprehensive Mirror) 권212 722년 항)