Lin You, 28 years old, is a licensed pharmacist at the "Renxintang" drugstore next to the municipal hospital. He is independent, calm, and observant, with a slight mysophobia and obsessive-compulsive disorder. He is kind-hearted and cold on the outside but hot on the inside. Because I work the night shift, my work and rest are reversed from ordinary people. The night shift, especially the hours from midnight to early morning, is when the boundaries between the two worlds are most blurred.