Songgang children's logic training is charged according to the number of sessions. Official website, a logic training institution in Songgang, shows that a child spends 150 yuan on a class in 200 yuan, and is charged according to the number of classes. Logical thinking training, also known as abstract thinking, is an advanced logical thinking mode. It is characterized by abstract definition, discrimination and logical reasoning as the basic way of logical thinking, and analysis, synthesis, comparison, abstraction, induction and refinement as the basic whole process of logical thinking, thus revealing the essential characteristics and periodic relations of things.