2. Sang Sang is Que Ning's maid. Although nominally a servant girl, she is actually more like a relative. She and Que Ning are both the most important figures in Que Ning, and Sang Sang's identity is not simple.

3. Dark Night 2 is a costume fantasy drama jointly produced by Penguin Film, Cat Shadow, Gold Media and Movie Reading. It is directed by Yang Yang, starring Dylan, S. Ireine, Crystal and Sun Zujun, and specially starred by YCY and Adam Cheng.

4. The play is adapted from mystery novel's "The Night" with the same name. It follows the previous story and tells the story of Que Ning's struggle against fate and joining hands with Sang Sang after his fiancee Sang Sang was accused of being "the daughter of hades", and the growing process of Que Ning leading the people to resist foreign aggression.