The use of blockchain technology is a good example of taxiing.
But Uber Co. cannot issue coins because it is not allowed in China.
Technical applications are allowed, but the ICO of the virtual currency is prohibited.

I think it can exist for a long time. Because Bitcoin is a digital currency, it is very beneficial to develop in the digital age. Therefore, I believe that as long as the digital era is still developing, Bitcoin will always exist.

I think it can be judged by the tendency of public opinion in the social media and the country's big events, because this is the most intuitive factor that affects the price fluctuation of Bitcoin.

This is a good idea. It is also very good for the development of Bitcoin. Teaching bitcoin at school will not only increase Bitcoin's popularity, but also allow more countries to accept Bitcoin faster.

This is not possible. Bitcoin is now in its development phase. More people will accept Bitcoin, so not everyone will stop buying Bitcoin.