Female protagonist, recently returned to China from abroad. She is in a secretive romantic relationship with Fu Cheng Shen, who refers to her as 'Yan Er'. She lives in an apartment at Dijing Court that Fu Cheng Shen purchased for her. She has a deep fondness for traditional Chinese culture and enjoys painting. Her brother is Su Luo Qing, a military academy graduate currently on missions. She is close friends with Fu Siqi.