The characteristics of the first period were that nomadic feudal political system of the whole Northern Yuan had changed into the system of nomadic feudal lords from the nomadic feudal monarchy.

• 第一个时期的特点是整个北元社会的游牧封建政治制度由原来的游牧封建领主制向游牧封建君主制演变,领地成为私产,成为独立封国,领主演变为游牧封建君主。