Tang Beibei is Lu Fan's Girlfriend

Yuan Jiaojiao covered her red face. She was so angry that she lunged forward to hit Tang Beibei back. 

Lu Fan quickly pushed her away and protected Tang Beibei behind him.

"Yuan Jiaojiao, stop this nonsense now!"

Yuan Jiaojiao was about to go crazy from anger. "Lu Fan, she hit me and you're still protecting her. Are you so bewitched by her that you lost your mind?"

Tang Beibei was stunned herself when she slapped Yuan Jiaojiao.

She let anger go to her head and acted impulsively. She regretted her action after she slapped Yuan Jiaojiao. 

Although Yuan Jiaojiao had gone too far, the person who hit first was always at fault, even if she had been wronged. 

It might feel good to slap someone, but it had undesirable consequences. Sigh.

She walked out from behind Lu Fan and took responsibility for her own actions.