Many ethnic minority peoples lived in China's
northwest regions is the Ming
dynasty.Their living conditions were quite different at that time.Take Yugu
people for example, only in Gansu does it live a special nationality——Yugu people.The experts and the scholars have paid much attention to the seven garrisons in Guanxi,especially to the studies of Hami's garrisons.The scholars have not only studied the
relationship between Mongolian people and nationalities of Tu,Baoan,Solar and Dongxiang,but also studied the relationship between Tibet and Mongolia,whose resettlement of
population from Mongolia to Qinghai and whose activities in the western regions in China.The research of Tibetan people in the northwest of the Ming dynasty has been
focused on the ruling measures of Tibetan tribes,Tibetan disseminated Buddhism,and Tibetan people's emigration and population by the Ming government.The research of Hui people in the northwest has been focused on the contents which are about the evolution of the Hui people, Hui nationality and Islam.