Answer:
No, each Asian country has their own food. as an example:
Vietnam has Vietnamese food, China has Chinese food, japan has Japanese food, Thailand= Thai cuisine etc.
Moreover, the typical cuisine may differ considerably within a country, e.g. China has at least four major regional cuisines, of which the cantonese tradition is the one commonly known as "Chinese food". Of course there are many traits common in Asian cuisines, like the absence of milk and milk products due to the widespread lactose intolerance. But, and also of course, the characteristics of a region always influence the regional art of cooking; so Japan, being an island, has a cuisine rich of fish and seafood, and its national food is Sushi -- raw fish.