Chinese look countries?
I suppose East Asia refers to Japan, China, Korea, etc. Surprisingly, even though their writing seems similar, they are a little isolated from each other in their roots. But some say Korean and Japanese have some elements from Turkic and Mongolic.
My language, Bahasa Melayu (Malay), is part of an Austronesian family of languages. We share roots with Bahasa Indonesia, Tagalog (Philippines), and all those islands in the Pacific including Hawaii. In the west, as far as Madagascar
As for the roots for languages of South Asian countries, I'll leave it up to the rest to discuss