Beef brisket rice originated in Japan, and its pronunciation is DONBURI (丼ぶりどんぶり), which means "cover on rice". The word "Ya" is not original in Japan, but it basically appears in Japanese. Chinese translation of "mixed rice" can also be directly understood as bibimbap.
Burdock rice source:
Japanese cultural relics, according to legend, appeared in the shogunate era. In ancient times, rice and side dishes in the upper class were eaten separately, and rice and side dishes appeared in the same bowl, which was regarded as an impolite way to eat at that time.
At present, the popular 1 pot rice in Japan, such as beef 1 pot rice, egg chicken rice, parent-child rice and pork chop rice, was formed in this era.