Where can I find Chinese tourists' comsumption data in Japan, South Korea and Thailand?

Hi blogger, I am working on a project, your site help me a lot. I need to research on Chinese tourists' shopping pattarn trend in Japan, South Korea and Thailand. For example, whether any slowdown in consumption? Any trend in terms of catogory or product. I collected some data about Japan, but got nothing about South Korea and Thailand. Could you give me a hint if you happen to know these. Thanks.