4 university roommates in Hunan rise together

"Every once in a while, we have a group discussion to clarify problems we met. Through this, we gather strength and wisdom and grow together," Sui said.

In addition to urging each other to study hard, they support each other emotionally.

"Anyone in a low mood can speak out his unhappiness and get our comfort and encouragement," he said.

Zhu Youfang contributed to this story.