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In page Jonê County:

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Among Tibetan at Amdo, Jonê exist The Zhouni Tusi (Chinese: 卓尼土司), ruled by the Tibetan Ga clan or Mandarin Chinese Yang () clan, was a Tusi chiefdom kingdom called Zhouni Kingdom, Choni Kingdom, or Jonê Kingdom ruled by the Gatsang (dga' tshang) family at Tibet. In 1404, whereupon they informed the Ming Emperor Yongle of this fact and were recognized as local rulers, and were given a seal of authority and the surname Yang (). The Yangs ruled Zhouni from 1404 until 1949.[1][2]