警钟 (jǐng zhōng): 警鐘

After three accidents occurred in a row at the factory, the manager decided to hold a plant-wide meeting to sound a safety alarm bell for everyone.

His experience serves as a warning bell for young people: don't neglect your health in order to make money.

The teacher took this exam failure as a wake-up call, reminding herself to adjust her teaching methods and help students better grasp the knowledge.

Environmental groups hope this severe smog will serve as a warning bell, pushing the government to speed up steps to tackle pollution.

Seeing the company next door go bankrupt due to a broken capital chain, our boss immediately took it as a warning bell and demanded that the finance department strictly control spending.