Can't play the difficulty of civilization level 5 and level 6.

If the difficulty is high, don't grab the big picture, build immigrants as soon as possible, and it is best to grab the pyramid, so there is no shortage of workers. The policy chooses to send immigrants (you can buy them if you are too wasteful, and sell the extra luxury goods for money) and workers. In this way, there will be three cities and three industries in the early stage, and 5-6 archers will be built instead of grabbing wonders. Defense should not be a problem. The first thing in architecture is food, and the second is technology. Just divide the city into three or four blocks, don't be too close to the main city, and circle resources as much as possible. Smiling faces generally depend on policies and exchange luxury goods with other countries (those countries with excess luxury goods generally change one). Science and technology go offline and develop artillery rockets as soon as possible. If your rocket comes out first, it's like attacking the city.