Long-haul flights increase the risk of economy class syndrome.

You must be careful of economy class syndrome on long flights.

Proportional representation is an important system to ensure the fairness of elections.

He likes to take a walk in the park at dusk.

The National People's Congress is the highest legislative body in China.

We should always remember the power of Kannon in difficult times.

This ancient proverb, 'know the other side and yourself, and you will not be in danger in a hundred battles', teaches us the importance of understanding ourselves and others.