The Shenzhou program is like a big airplane that flies really really high up in the sky. It's made by some very smart people in China who have been working on it for a long time.
The airplane is actually a spaceship that China can use to explore outer space just like how astronauts from other countries have explored space before.
To make sure the spaceship is safe and works correctly, the smart people in China have to test it a lot before they send someone up to space.
When someone does go up to space in the Shenzhou spaceship, they can do all kinds of important things like learning more about the planets and stars, or even fixing things in space!
So the Shenzhou program is like a really cool way for China to explore what's out there in space and learn more about it.