Excuse me, which treatment and future are better for the salesmen in ceramic industry and real estate agency industry?

Only 19 years old, it doesn't matter which industry you choose, what matters is an enterprising heart to learn! And the key is how high your starting point is. Real estate sales have certain requirements for academic qualifications. Because there are many trainings, it is often necessary to analyze and investigate the market and sort out marketing data. The requirements for intermediaries are low, they should be able to endure hardships, their working hours are not fixed and they often have to work overtime. Ceramic foreign trade seems to have some requirements for English communication. If you have no problem with English, stay with your sister, avoid detours and choose a better place!