Wei Zi was blind and bullied.

The answer is yes, hard work can change everything.

You were stupid when you were a child, and you were bullied and laughed at all the time at school. This is normal, because you haven't learned how to deal with your emotions correctly and how to communicate with others correctly.

However, when you grow up, you try to change, learn how to deal with your emotions correctly, and learn how to communicate with people correctly. This is the embodiment that hard work can change everything. Even if you are still cheated when you grow up, you can try to change, learn to handle your emotions correctly, learn to communicate with people correctly, and avoid being cheated.

Therefore, hard work can change everything. As long as you work hard enough, you can change your destiny.