As we have already seen, tradition gives us nine original wild tribes in the north named respectively the Kyŭn, Pang, Whang, Păk, Chŭk, Hyŭn, P’ung, Yang, and U. These we are told occupied the peninsula in the very earliest times. But little credence can be placed in this enumeration, for when it comes to the narration of events we find that these tribes are largely ignored and numerous other names are introduced. The tradition is that they lived in Yang-gok, “The Place of the Rising Sun.” In the days of Emperor T’ai-k’an of the Hsia dynasty, 2188 B.C. the wild tribes of the east revolted. In the days of Emperor Wu-wang, 1122 B.C. it is said that representatives from several of the wild tribes came to China bringing rude musical instruments and performing their queer dances. The Whe-i was another of the tribes, for we are told that the brothers of Emperor Wu-wang fled thither but were pursued and killed. Another tribe, the So-i, proclaimed their independence of China but were utterly destroyed by this same monarch. It is probable that all these tribes occupied the territory north of the Yalu River and the Ever-white Mountains. Certain it is that these names never occur in the pages of Korean history proper. Doubtless there was more or less intermixture and it is more than possible that their blood runs in the veins of Koreans today, but of this we cannot be certain. We must call attention to one more purely Chinese notice of early Korea because it contains perhaps the earliest mention of the word Cho-sŭn. It is said that in Cho-sŭn three rivers, the Chŭn-su, Yŭl-su, and San-su, unite to form the Yŭl-su, which flows by (or through) Nang-nang. This corresponds somewhat with the description of the Yalu River. We now come to the wild tribes actually resident in the peninsula and whose existence can hardly be questioned, whatever may be said about the details here given. We begin with the tribe called Ye-măk, about which there are full notices both in Chinese and Korean records. The Chinese accounts deal with it as a single tribe but the Korean accounts, which are more exact, tell us that Ye and Mak were two separate “kingdoms.” In all probability they were of the same stock but separate in government.