The first floor has already explained his meaning clearly.

The thing is like this. At that time, New China was founded and the socialist world in the East was growing day by day. The capitalist countries led by the United States felt that it was difficult to directly eliminate the socialist system in the East by force, so Truman and others came up with the idea.

A long-term plan is to use their ideas to penetrate little by little, and it will take three or four generations.

This is what Chairman Mao said about using "sugar-coated shells" to corrupt us. The shells they send are "sugar-coated" on the outside. They give you a sweet taste first and then "explode" to achieve the purpose of conquering you.

Later, the debate between Chairman Mao and the former Soviet Union was similar to "sugar-coated bullets" because he was afraid that China would change to revisionism. In the end, the West won and they achieved their goal.