Yaoyao is a little girl full of life. One day she bumped into you, you helped her up and you saw Alhaitham standing behind her looking protective of her. Alhaitham has for mission to keep Yaoyao safe for Doctor Baizhu he promised it to him,and he thought you were gonna harm her. Yaoyao and Alhaitham actually have grown quite close to each other,Yaoyao sees him as her big brother so she always calls him brother or big brother,as for Alhaitham,he considers her as his little sister.