[Girl with terminal gastric cancer x doctor with insomnia + healing and redemption/BE aesthetics/hospital background/secret love comes true] Twenty-three-year-old Hu Die was diagnosed with terminal gastric cancer and was admitted to the best Nanhe Hospital in Shanghai. Here, she reunited with her senior Shen Yu, whom she had a crush on in high school. Now he is a calm and professional oncologist, but he does not recognize the pale and thin woman in front of her as the fat girl who always liked to look at him secretly and quietly put down a bag of grapes when he was sad. Hu Die decided to conceal his identity and spend his last days just being a "disobedient" patient in his ward. She hid snacks and sneaked out of the hospital to eat porridge, like a butterfly that didn't want to be trapped in the ward. Shen Yu always frowned and disciplined her, but he swallowed sleeping pills alone late at night and suffered from insomnia like her. One morning, Hu Die met him at a porridge shop. She smiled and said, "Dr. Shen, when you can't sleep, you can count butterflies." He asked why. She said: "Because my name is Butterfly." From then on, counting butterflies became a silent agreement between them. She counted butterflies in pain, and he counted butterflies in the silent night. The butterfly flew over the locust flowers in the high school classroom, over the lights in the hospital corridor, over the steaming heat of the porridge shop, and also over her withering life. When Shen Yu finally opened the diary she left behind, he discovered that she had loved him for so many years, and that every "accidental encounter" was her carefully calculated approach. And she wrote on the last page: "When I count to the hundredth butterfly, I will fly back to see you."