Chinese, Japanese, hmm?
In general, Chinese food is much more oily than Japanese food, though, they have the more various taste comparing with Japanese food that most taste is SALTY.
Depends on how it is cooked. If you look at Cantonese cuisine, a lot of it is steamed, so basically there is no oil. A lot of Chinese food is stir-fried, so there is very little oil.
Having lived in Hong Kong for a couple of years, I've gorged myself on yum cha (dim sum)
Note 'Yum cha' literally means 'drink tea', though what it really amounts to is meeting and talking with tea and usually eating dim sum (if the restaurant serves it). Here in Japan, they mistakenly label some Chinese restarurants as 'yum cha' restaurants.