Let's talk about currency and investment first. For me a Chinese, if I wanna to invest foreign stocks, it will be difficult for me. And if I invest some projects listed on some certain websites, the money I invested can't be traded, so it will be dead money. But since there is exchange for ICO or crypto, it means that there will always be new one who want to take the share you held. So that means, the whole world is in the same market. That's why ICO is booming.