The original meaning refers to playing games, Go and gambling. In modern mathematics, there is game theory, also known as "game theory" and "game theory", which belongs to a branch of applied mathematics. It means that when there is interaction between multiple decision-making subjects, each subject makes a favorable decision according to his own information and ability.

"Yibo" makes sentences:

1, Grandpa and Dad are playing chess on the board recently.

Two competing companies have been using their brains in business for many years.

3. I learned a lot about cooking from Master and gained a lot of new knowledge.