Why did the temple sculptures in Liao and Jin Dynasties inherit the cultural and artistic traditions of the Central Plains?

Temple sculptures in Liao and Jin Dynasties have been left in Hebei, Shanxi and Northeast China. Generally speaking, because the Central Plains and the Song Dynasty were ruled by tribes with low culture at the same time, they were bound to be influenced by the culture of the Central Plains, and at the same time, they were bound to enslave Han artists to serve them. Therefore, it is natural to directly follow or inherit the cultural and artistic traditions of the Central Plains, which can be clearly seen from many productions.