What are the top countries in Asia for crypto?

I'm quite interested in the crypto industry, especially in Asia. Could you tell me which are the top countries in the region for crypto? I'm particularly interested in knowing about their crypto regulations, the number of crypto users, and the overall crypto ecosystem they have built. I'm also curious about the types of cryptocurrencies that are popular in these countries and the reasons behind their popularity. Could you provide me with some insights on this?