How to deal with the cities captured by Civilization 5?

Your problem boils down to how to control smiling faces, which is a compulsory course for every war maniac. People take the traditional route of small shops, and the problem of red face rarely occurs. If you take the independent explosion route, you will either burn it or sell it. Open the honor right 2 (stay in the city) and add a smiling face. Remember to buy a building like the pious tower. In the early stage, policies and buildings can be used to suppress smiling faces. If necessary, we can sacrifice the population and stick to ideology to solve the smiling face problem.