From Li Xiaolai who owns the most BTC in China:
Most of us sell our time making a living. How to make the most out of your time:
Sell each portion of your time multiple times: if you spend one year writing a book and publish it, that one year is sold 10 times if you sold 10 books, 100 times 100 books.
In China, there are lots of micro apps that provide platforms for competent people. If you are an expert in financing, you may give a leture on the app and charge, let's say 1 USD per person. For bigshots like Li Xiaolai, 10,000 USD an hour is just a piece of cake.