Chaoyang has a long and rich history. The discovery of the over five-thousand-year-old
Niuheliang Hongshan Cultural Ruins in the region has drawn attention to Chaoyang as one of the birthplaces of ancient Chinese culture. The area first appears in Chinese historical records as “Liucheng County” in the Early
Han period of the 3rd century B.C. In 342 AD, King of the
Former Yan, Murong Huang, made Chaoyang his capital under the name Longcheng ("Dragon City"), and the city remained the capital through the
Later Yan and
Northern Yan periods. The center of Longcheng was located at the old town of modern Chaoyang. The
Mongols seized Chaoyang and surrounding regions. When they submitted to the Manchu
Qing dynasty, Chaoyang was controlled by Chinggisid princes and descendants of
Jelme. Their territories became
Tümed Right Wing Banner,
Kharachin Left Wing Banner,
Kharachin Right Wing Banner, and
Kharachin Middle Banner, all of which were under
Josutu League. Although the Qing officially prohibited the Chinese from immigrating to Mongol lands, the southernmost
league of Mongolia was flooded by Chinese peasants. As a result, several Chinese prefectures were created within the Mongol lands, and the Chinese came under the jurisdiction of the neighboring
Chengde-fu. Chaoyang County was established in 1778, with its seat at the old town of Chaoyang. In 1891, a Chinese secret society named
Jindandao raised a rebellion, massacring tens of thousands of Mongols and forcing survivors to flee northward. Under
Manchukuo, the eastern part of Chaoyang, including the city of Chaoyang, belonged to Kin-chow Province while the western part constituted Jehol Province. ==Geography and climate==