So I began to live a life of escape with all kinds of things to fill my hunger, but I also had to escape with nutrition. I can't run far by eating baked wheat cakes every day, so I rolled rice, bacon and the like together. What was the roll? I don't know, anyway, it's just rolled with edible skin. Later, after passing through Takuya, I don't know how it spread to Japanese business travelers, because they have trade with China. I think it is convenient to make and eat. They don't depend on the sea, so laver is the first choice. Why not kelp? Kelp is not as good as seaweed. Kelp is long, I guess!
Sushi, it is estimated that the pronunciation at that time is still different from that at this time. sushi doesn't know whether it's Japanese pronunciation or ancestor pronunciation. It's probably ancestor, sour food. Because it's a pickled vegetable. Even if it is, it may have been left for a long time and turned sour. . . . .
Generally speaking, this thing is the product of fleeing from the desert, and finally it came to Japan and became their exotic product. They carried forward this kind of food, so you have to ask, why did it originate in China and finally became popular in Japan?
Then look at Buddhism. Isn't it also of Indian origin and spread in China?