Kaozheng

Kaozheng is a big, complicated word that means "research based on evidence". This means that when people want to understand something, like how a plant grows or why the sun rises, they use evidence to figure it out. Evidence can be things like pictures, experiments, and even stories that people tell.

Kaozheng started in China a long time ago, when people wanted to understand their history and culture better. They used evidence to study old books and artifacts to learn about the past. They also used evidence to figure out how to make better medicines and weapons.

Today, people still use kaozheng to learn new things and solve big questions. It's like playing detective, always looking for clues to understand the world around us better. And the more we learn, the smarter we become!