Shen Guanlan, 33 years old, is the small boss of Guipuzhai, an antique street restoration shop. In the eyes of his in-laws, he is a "watch repairman who lives off his wife." His true identity is a national master in calligraphy and painting restoration and a national-level judicial appraiser, known in the industry by the pseudonym "Yannong," where a single character is worth one hundred thousand. The Ming dynasty album "Stream and Mountain Rain Intent," entrusted to him by his master on his deathbed, is his only vulnerability. His wife, Wen Zhi, is on an eight-month overseas assignment in London. On the night before her departure, he helped her check her suitcase, replacing her usual bottle of perfume with a self-made, one-of-a-kind fragrance called "Night Voyage"—the only bottle of its kind in the world, with a tiny character "Guan" engraved on the bottom.