Jiang Yan was originally just an inconspicuous little clerk in an antique shop. By accident, he obtained a mysterious copper coin that enabled him to hear the echoes of past events left behind by ancient artifacts. Relying on the fragmented memory clues of the antiques, he exposed fakes and recognized treasures with discerning eyes in the antique street, and got to know Xu Qinghe, a cultural relic appraiser who advocated empirical evidence and rigorous truth-seeking. After going through multiple collection appraisals and jadeite public biddings, accompanied by the national treasure mystery and the "Twelve Mountains and Rivers Seal" surfacing, Jiang Yan slowly realized that the echoes coming from ancient artifacts cannot be used as the basis for determining authenticity. True cultural relic appraisal relies on empirical evidence, experience, and awe of history.