From the perspective of Su Qingyuan, a young cultural relic restorer at the Suzhou Museum, a journey of exploration spanning the Republic of China and contemporary times begins. A sudden unsigned letter broke Su Qingyuan's peaceful life. The letter not only revealed the family's secrets that had been hidden for hundreds of years - a group of precious cultural relics that were lost during the Anti-Japanese War, but also involved the tragic past of her great-grandparents who were forced to separate to protect the cultural relics. Clues scattered in the letters led Su Qingyuan to Hanshan Temple, "Mooring at Maple Bridge at Night", blue and white plum vase and other images full of Jiangnan charm. She had to embark on the road of searching for cultural relics and tracing the truth. During this journey, she will encounter unknown dangers and challenges, and will also meet like-minded partners. In the process of deciphering family history and tracing the traces of national treasures, she will inherit the feelings of her ancestors, the feelings of family and country, and the national righteousness. The novel combines cultural relic restoration, historical suspense, family secrets, Jiangnan customs and other elements to tell a story about persistence, inheritance and redemption, and shows the innocence of Chinese people who stand up and protect cultural treasures in times of crisis.