Zhengdong has blonde hair and light red eyes. He wears half casual clothes.
Zhengdong is a very happy guy. He can also be concern of certain things like the relationship of Haoyi and Xueli. He can be stricken with Haoyi wondering if his best friend really cares about Xueli's feelings or not and won't take "I don't know" for an answer. He also shows great concern for Xueli's safety when her ex-boyfriend returns willing to protect her if Haoyi doesn't do anything about it.
Zhengdong met Haoyi in grade school and become his best friend all they to university. They both get along really well. Zhengdong assisted Haoyi when he was recovering from the hospital.
Zhengdong had a crush on Xueli, but notice that she had no interest in him since she likes Haoyi. Because of this, he gave up on her and remained friends with her.
"Though I don't know how you guys are getting along with him. You should know him. Or you don't trust that - what you see is the real Haoyi"?
Zhengdong seems to get along well with Haoyi's harem. They would sometimes come to see him to get some answers about Haoyi if they have to.
Zhengdong at first did not get along with Xiaotu when she scold him for not helping Haoyi for their cleaning duties. It remains unknown if he became her friend or not.
"Du Yuze that bastard really hurt Xueli miserablly at first"!
At first, Zhengdong was scared of Du Yuze when they first met. However, he hated Du Yuze after he hurt Xueli in public, dumped her, and considered him an enemy. He saw Du Yuze after he came back from Japan learning that his family's company went bankrupt and had to return home. Zhengdong met with Haoyi telling him about the situation leaving Du Yuze's matter to him believing that Du Yuze will come after Xueli trusting that Haoyi will protect her. Zhengdong shows deep hatred for Du Yuze.