Show educational difficulties. It is appropriate to describe the difficulty of educational development in Nanchuan with a small horse-drawn cart. This once resource-exhausted city, on the one hand, has experienced the short-term pain of urban transformation and development, on the other hand, the balanced development of compulsory education also needs a lot of investment to promote education equity and improve people's livelihood and well-being. A small horse-drawn cart generally means that someone or something has done something beyond their ability, which is equivalent to overreaching. Small horse-drawn carts overestimate their own strength, have no accurate understanding of their own ability, and act rashly without measuring their own strength.