On one hand, there is a theory (as supported by Takeshi KUNO, Saburo MATSUBARA, etc.) according to which the style of the Southern Dynasty of the Northern and Southern Dynasties in China influenced the style of this statue; on the other hand, there is a theory (as supported by Teruo UENO, Seiichi MIZUNO, etc.) according to which the roots of the style are with the Buddha statues of Northern Qi, Northern Zhou, and Sui Dynasties.
中国の南北朝時代の南朝の作風が影響したものとする説が古くからある一方で（久野健、松原三郎などの説）、北斉・北周・隋の仏像に様式的源流を見る説（上野照夫、水野清一など）もある。