Whydoes chinese food make you have such bad gas?

It's the ginger. Ginger has a medicinal use - to warm the body and release the cold air from your body. In Chinese, ginger "chases wind" from your body. That's probably what makes you gassy.

Cabbage, garlic and broccoli cause gas. If you are eating Chinese dishes with any of those, you probably will get gas.

mexican causes gas for me, chinese food only fills me up for 5 mins then i get hungry again

It could be all the vegetables from the cabbage & bean family.
Try taking some Beano first, to supply the right enzymes you need.