Shen Tinglei, the last descendant of Tinglei's lineage, can listen to the echoes of the earth and uncover the mysteries of ancient tombs, but the price is that his ears are gradually falling into eternal silence. When geologist Zhou Yan came to him with a pure contract, one needed "ears" to find the medicine to save his family, and the other needed "protection" in exchange for survival. They go deep into the treacherous underground palace, evade deadly mechanisms in silent places, and rely on each other's heartbeats in absolute silence. When Shen Tinglei's world finally lost its voice, the man who once said that emotions are redundant variables held his hand tightly and wrote down the trajectory of the future word by word in his palm. This is an adventure that started as a transaction, but has become the ultimate salvation for two incomplete souls to become each other's cochlea and regain each other's hearing.
