When the king of Chu and Li met an emergency enemy situation, he drummed and called the people together to defend the city. One day, King Li was drunk, picked up the drumstick and beat the drum in a daze. People heard the drums and hurried to the guarding city in a panic. King Li quickly sent someone to stop him. The person who wanted to send him told him: "King Li was drunk, picked up the drumstick and knocked around, joking with everyone." People have all gone home.

A few months later, the enemy really invaded, and the beating of gongs and drums sounded the alarm. People thought the king was drunk and joking again, so they didn't rush to the guarding city like last time. Later, Li Wang changed the original order and changed the alarm signal again, and people believed it. . . .

Explain that this fable shows that you can't joke about the safety of the country and the people, otherwise you will lose your trust in the people and bring harm to the country.