As for language, I can't speak Hindi and Mandarin. I can speak a little Thai, and I guess if I were to stretch it, I would say it's script is Hindi influenced.
Also, I can cuss a little in Japanese. I can flip people off in Korean too
.... Seriously though, Asia is not as simple as languages. If anything, most Asians, I would say, share a common bond through Confucianism. Just about every culture in East and SE Asia is touched by it. If you were to associate it all with something, it'd be that.