Japan has become the largest Bitcoin exchange market with 51.33% market share of the world Bitcoin exchange market. Analysts BitFury Vice Chairman George Kikvadze attributed the surge in trade volume of Bitcoin exchange in Japan market to the exit of Bitcoin traders in China.
source:
https://cointelegraph.com/news/japan-becomes-largest-bitcoin-market-as-traders-leave-china
https://twitter.com/iamjosephyoung