How Far is Happiness is a 2015 drama directed by Zhang Xiaobo and starring Sun Honglei and Jiang Shuzheng. Lu Yuan (Sun Honglei) is a chef at a three-star Michelin restaurant who has settled in the United States for many years. In an accident, Lu Yuan's best friend Peng Hai (played by You Yong) is killed. With his best friend's ashes, Lu Yuan returns to China, hoping that his best friend can sleep under the soil of his motherland, and at the same time, he also prepares to send Peng Hai's daughter Peng Jiahe (played by Guan Xiaotong) back to her mother.
What Lu Yuan doesn't realize is that his ex-girlfriend Gan Jing (Che Xiao), whom he can't let go of, is now in love with his best friend Jiang Haokun (Wang Yaoqing), which makes Lu Yuan feel very miserable. Meanwhile, an apprentice named Xiao Cai (Zhang Yixing) stalks Chang Yuan, hoping to learn from him. Jiang Lai (Jiang Shuying) is Jiang Haokun's younger sister, and her appearance brings a different color to Lu Yuan's gray life.