The young classmates at Wutong School, because of an uncontrollable instinctive throbbing in the dark, unlocked a secret bond that belonged to them only.
He was born with the ability to sense each other's traces across distances. The symbiotic blood contract recorded in ancient books was for the ultimate mutual support, but he was afraid that all the pain in the future would be shared with his sweetheart; but he was willing to accept this agreement of living and dying together without hesitation.
From the classroom desk to the evening breeze in the mountains, from the high school examination room to a distant place thousands of miles away, the young man made a blood covenant with sincerity and shared all the joy and hardship equally throughout the years.
Purpose: To explore the essence of love, which is the full price of voluntarily sharing destiny; to use the campus symbiosis story of two special teenagers to eliminate the inherent loneliness of individuals, to interpret the long-term love of equality, two-way, sharing joys and sorrows, and to express it through mathematics, aesthetics, and existential philosophy: the best bond is not afraid of suffering, and actively shares all the hardships and stars of the rest of life with the other person.