Small horse pulling cart is a Chinese word, pronounced xi ǎǎǎǎǎǎǎǎǎǎǎ d à ch e, which generally refers to someone or something doing something beyond their ability.
interpretation
(1) As a saying goes, it refers to someone or a group doing something beyond their ability.
(2) Today Automobile industry The term in refers to that the power of the engine (motor) of a certain type of car is less than the power required for normal operation of the car, and the fuel consumption is high at this time. Because the engine is also called the motor, it is called "the horse pulling the cart". (3) To put it simply, small Larger than Beyond their own strength, they overestimate their strength and work without success. 
