Expresses the complex emotions and helplessness in love. "Guess the Heart" is a song released in February 2013. The composer is Taiwanese musician Zhang Yu, the lyrics are his wife Shi Yilang (Xiao Huiwen), and it is sung by Taiwanese singer Wan Fang. The whole song has a beautiful melody and emotional lyrics. Sincere and deeply rooted in people's hearts, it expresses the complex emotions and helplessness in love.