Twenty-two-year-old Tang Qing grew up in Qingyun Taoist Temple and went down the mountain for trial as promised. Before leaving, her master gave her four old engagement letters, behind which lay the mystery of her birth. Several outstanding young men in the city met her one after another, but Tang Qing had no heart for romance, only wanting to deeply cultivate her career, explore the truth of her life experience, and walk out her own path of life.