A handover of cultural relics on a winter night in the Forbidden City reunited restorer Zhou Yanshen and researcher Shen Qingli over a half-blood jade pendant. The moment the fingertips touched the jade huang, the snowy night four hundred years ago roared in - the broken piano music, blood-stained armor, and unfinished vows turned into sharp tinnitus. The past and present lives overlap under the red walls of the Forbidden City: in this life, when he repairs broken ancient objects, he always feels the smell of rust in his throat, and when she copies ancient paintings, the rice paper often has inexplicable blood stains. When the archaeological team salvaged a mandarin duck jade engraved with the word "Gu Chen" from the bottom of the Yongding River, the truth buried in the dust of history was gradually pieced together with the blood-colored jade pendant...
