The Asian vegetarian meal is Indian, Hindu style. If you want Chinese style, you should order Oriental vegetarian.
If you are vegan, there are several choices besides the standard western vegan. Oriental vegetarian and strict Indian vegetarian are also vegan.
CX will also have a few Indian style vegetarian meals that are "canned" and are intended for passengers who forgot to order a special meal. There are 4 different styles. You need to ask the crew for these since they are not on the menu. They will also have a vegetarian in instant noodle as a snack.
According to the Marco Polo club, there is no seafood special meal.