This is very simple. Only discuss the development of a layout formula. I can write one easily. Hehe, you can write now. You can say anything you want. For example, China artillery crossed the river to beat the wind curtain horse. You can say that it was the first time that the red artillery crossed the river and leveled the car. It was all the same, but at that time, the black side did not find the horse fighting back 3-5, so it suffered a lot for a while. As a result, many chess players were forced to score 7 1 in the second step, and then the red side got off the bus and quickly shot 8/2, forming an estuary gun formation that could not get off the bus. However, this formation has evolved, which is slightly negative. The reason is that the red side hasn't got into the car to patrol the river, so you take the estuary gun, which is not targeted. The red side can drive two into one and adjust the formation flexibly, and the black side is bound to fall behind. Later, the reason why Black dared to run flat on the right train was because I just said that I had found such a means for Sanma to return to five. Therefore, the red side found it difficult to find cheap guns, so the Seventh Horse became the mainstream again. Later, there were methods such as killing by shelling, attacking while running, and hitting hippos. Generally speaking, we can strike first, earn more soldiers, pave the way for the endgame, and the black side also has many opportunities to counter the red right wing. The formation is open, and both sides attack one wing and have opportunities for each other. The situation is usually very exciting. You can also mention that the black side also has a system of protecting horses with high cars, which is also related to what I just said. At that time, the black side mainly used river cannons and high-powered vehicles to protect horses. At first, the red side also took the gun, and the black side took the gun and retreated 1. Then if the red side enters seven soldiers, the black side ignores it, takes the car and enters eight, and then forces the red side to fight back with two guns. At that time, the red side could not find a solution, which was also a great loss. But later, with the development of the layout, the red side also found a good way to deal with it-first, Sanma retired five times, which could effectively curb the offensive of the black side, and then the black side wouldn't dare to go like this in the future. So it's interesting for you to watch chess. You might say "it's easy to think of" a simple horse with a heart, but it's not like that. The development of layout is a long process, which has been summed up by several generations of chess players in actual combat. Every move can stand the test of the exam, and various changes have been practiced countless times before reaching a conclusion. So in the layout of modern China artillery cross-river vehicles against the wind horse. It is generally believed that it is better to run flat against the car than to protect the horse with a high car, because the black counter-attack will be faster and the formation will be easier. Will become mainstream. As a newspaper, huh? These can be written. I hope I can provide you with a reference.