What is the "secret" of Zhao She's governing the country and the army?

The so-called "using the masses" means advocating and paying attention to concentrating superior forces in the war. During his military career, Zhao She attached great importance to the principle of "using the masses" and regarded it as the basic guiding principle of war. When talking about the art of war, Zhao She and Hotan Dan specially discussed this topic. One day, Tian Chan told Zhao She that he had read Zhao She's The Art of War, and he admired everything except "using the public". He believes that "employing more people" will make people unable to farm, reduce rents and taxes, and make the supply of military food difficult, which is a "road to self-destruction." He also said that in the past, the emperor could conquer the world with only 30 thousand troops; But you, Zhao She, insist that the number of soldiers must be 654.38+10,000,200,000, which can't convince people. Zhao She refuted this. He believes that Tian Dan is not only not proficient in military affairs, but also ignorant of the current situation. General Wu's sword can break horses and cattle and cut bronzes, but it will break into two pieces when used to cut pillars and hundreds of pieces when used to cut boulders. In today's situation, 30 thousand people have to respond to the soldiers of a powerful country, just like cutting columns with swords and hitting stones. Then, Zhao She explained to Tian Chan in detail the relationship between the change of the current situation and the way of fighting and the scale of war. He said: in the past, the four seas were divided into countries. Even big cities are no more than 300 feet, but there are only 3000 people. It must be easy to attack a city with 30,000 people. It's different now. The world is divided into seven countries, each with hundreds of thousands of soldiers. This war is large in scale and lasts for a long time. For example, in particular, we attacked Chu with 200,000 men and fought for five years. Chair Zhao's 200,000 troops attacked Zhongshan for five years. Now Qi and South Korea are besieging each other. Who can say that 30,000 people can save them? 30 thousand people besieged the city, city to city, it is impossible not to leave a corner. What will you do if the siege cannot be encircled and the field forces are insufficient? Tian Chan sighed after hearing this and said that he was convinced.