What industry in Zhengzhou is the most profitable?

Personally, I think e-commerce, medical care, tourism and education are industries with great development potential in Zhengzhou. E-commerce benefits from the popularity of the Internet, aging and health awareness lead to an increase in medical needs, and tourism has potential for development because of its rich tourism resources. The education and training industry has also developed rapidly due to the intensification of social competition. To make money, you need to choose the right industry according to market demand, competition and personal interests, and constantly improve your ability.