Around 940s, the young Đinh Bộ Lĩnh emerged as a leader of villages youth, who played "royal games" in which Bộ Lĩnh was the king. The tradition folk said he had them collect wood for his mother, who slaughtered a pig and put on a feast. Villagers sensed a grim future leader: "We’d better follow him now before it is too late." They delivered their youths to Bộ Lĩnh, and he set up a base on land of his uncle, who refused to submit to him. Bộ Lĩnh sent his friends to attack the uncle, who pursued him, found him trapped under a collapsed bridge, and almost intended to kill him, but then saw two yellow dragons flying above. The uncle withdrew and later submitted to him. Historian Oliver W. Wolters termed the story as a "man of prowess" possessing the "soul stuff" befitting a chief.