After his parents died in a car accident, fifteen-year-old Lu Shen tore up his admission notice and brought his seven-year-old brother Lu Tan, who suffered from congenital heart disease, back to an old building in the old city. In nine years, he worked his way from a construction site handyman to an architectural designer. All the escape routes on the drawings were 30 centimeters wider - that's the size of an ambulance stretcher, reserved for Lu Tan who might get sick at any time.
Lu Tan makes a living by writing articles, and his dependence on his brother is hidden between the lines: when he is ill, he can hold Lu Shen's fingers to sleep peacefully, and his sketchbook is filled with "the best person in the world." Lu Shen also realized on a rainy night that his concern for his younger brother had already crossed the line.
When an offer from a foreign design institute brought hope of a transplant, Lu Tan stuffed a matching report into his brother's luggage, with the words on the back: "Your bones can't make up for mine, we are one bone." Blood is the umbilical cord of salvation, and also the chain of imprisonment. They coexisted in love, and ended up on the ethical boundary, extinguishing all possibilities with their own hands, and letting the pain of the broken roots spread for the rest of their lives.
Purpose: Through the tragedy of the two brothers, it shows the pain and helplessness of individuals under taboo emotions: when the deepest dependence and the most turbulent love collide with the insurmountable natural boundary of "blood relationship", in the end, we can only bear the weight of this fate through self-restraint and active separation, in order to reflect on the conflict between emotion and ethics, as well as the struggle and sacrifice of people in innate connections and acquired desires.