下列短文的划线部分是错误的。
Confucius was born in the state of Lu in the year of 551 B.C. When he is 3 years old, his father died. And when he was 17, his mother died. And Confucius received a good education when he was young. In his thirty, Confucius began to teach. He spent the rest of his life teaching. In the age of 55, Confucius begins to travel around China. He tried to search for good rule of behavior. When Confucius was 68 years old, he returned back to Lu, his home state. He wrote lots of books after he came back. Five years after, he passed away. Although he has been died for several thousand years, we can still remember he forever.