The Evenks or Ewenki are sometimes conjectured to be connected to the Shiwei people who inhabited the Greater Khingan Range in the 5th to 9th centuries, although the native land of the majority of Evenki people is in the vast regions of Siberia between Lake Baikal and the Amur River. The Ewenki language forms the northern branch of the Manchu-Tungusic language group and is closely related to Even and Negidal in Siberia. By 1600 the Evenks or Ewenki of the Lena and Yenisey river valleys were successful reindeer herders. By contrast the Solons (ancestors of the Evenkis in China) and the Khamnigans (Ewenkis of Transbaikalia) had picked up horse breeding and the Mongolian deel from the Mongols. The Solons nomadized along the Amur River. They were closely related to the Daur people. To the west the Khamnigan were another group of horse-breeding Evenks in the Transbaikalia area. Also in the Amur valley a body of Siberian Evenki-speaking people were called Orochen by the Manchus.