Ultraman

Spaghetti was not originally invented by Italy/Italians,  yet you can have it in every "Italian" restaurants. So what?
The term you should learn is "fusion". Who really cares the originality of the food? As long as it tastes good!

Ultraman

I meant, I don't care if those so called "Japanese hotdogs" "Bakudanyaki" were originally invented/created by Japanese of not, as long as they taste good.

Of course you (not we) can run a business of making your Chinese hotdog if you like, and tell us how many of your customers are amazed by your product/creation and how good your business is.