Analysis of information sources in references of the Wikipedia article "Durumagi" in English language version.
Goguryeo tomb murals were primarily painted in Jian 集安 and Pyeongyang,平壤 the second and third capitals of the kingdom from the middle of the fourth century until the middle of the seventh, respectively. [...] They also display slightly different characteristics by region. For example, the morals and customs of Goguryeo are featured in murals found in Jian, while those in Pyeongyang show the cultural influence of the Han dynasty 202 BC-AD 220 in China, which governed the region for about four hundred years. This explains why we can see figures in Chinese-style dress in the latter.