Add a Little Sweet (加一点甜) by: Sun Ai Li (孙艾藜) & Han Zhi Yu (韩智愚) - Mysterious Love OST
Drama Story: Ruan Nian Chu, a quirky and endearing theatrical performer, meets Li Teng, a cold and haughty man with a high EQ and IQ. Ruan Nian Chu is rescued from peril by Li Teng. The two fall in love, but they eventually part ways because they are on different life paths. The two meet again five years later, and their feelings for one another are once again rekindled. But when they cooperate to expose the villain's plans, the two encounter a fresh threat.