What is the investment of 4 million?

Why don't you make an investigation yourself and open a shop according to people's needs to make up for each other's weaknesses, don't you think? I can't just consider one factor, but also my major, local market demand, other available resources, environmental conditions and human conditions. What I like is also very important. If I am interested, I will redouble my efforts, and I won't feel tired of doing business!