1. In the late Tang Dynasty, there was a man named Feng Dao who was ordered to be sent to Zhongshan. After Jingxing, he was afraid of losing his front hoof and didn't dare to loosen the reins; When I arrived in Ma Pingchuan, I let my guard down and let my horse wander. As a result, I fell.

2. A drop of water wears away the stone, but a rope saw breaks the wood.

3. The story of Bian Que meeting Cai Huangong

4. The subprime mortgage crisis in the United States started as a little bubble every year and eventually evolved into a global financial crisis, which has to make people think that "disasters often accumulate in small amounts".

5. A levee of a thousand miles is broken by an ant nest.