Intangible cultural heritage restorer Jiang Wan accidentally awakened the ancestral compass during the live broadcast and discovered that traditional Chinese crafts were the key to sealing the ancient secret realm. Split threads of Su embroidery can reveal life and death, while Hui ink and gold can connect yin and yang. When she used tapestry techniques to complete the "Snow Scenery and Cold Forest Picture", the entire ancient silk turned into a star map, illuminating the bronze buildings and ships buried under the modern city - this is the lost "secret realm of heavenly craftsmanship" of the Mohists, which hides the lifeblood of China that craftsmen of all generations since the Liangzhu Civilization have sacrificed with their souls.
When the criminal police captain Gu Zhao came to the door with the autopsy report of the Jade Silkworm from the Warring States Period, the Southern Song Dynasty celadon pillow was leaking human blood. Forensic doctors found the same traces in the corpses of thirty-eight intangible cultural heritage inheritors: the skin was branded with the words "Kao Gong Ji", and the hearts were replaced with secret-color porcelain living figurines. What's even more bizarre is that the DNA of all the deceased people exactly matches those of their predecessors in the Forbidden City's cultural relic restoration files.
In order to solve the mystery of "Sacrifice of Thousand Craftsmen", Jiang Wan used an embroidery needle as a sword and a compass as a shield to travel through ancient and modern time and space:
Dehua kilns of the Southern Song Dynasty... Jingtai of the Ming Dynasty... Painters of the Tang Dynasty... Yin and Yang Liao... Longquan Sword Shop... Li ethnic minority dyeing... Quanzhou Nanyin mixed into the war frequency of "Lanling King Entering the Battle Song"...
When Gu Zhao's ancestral jade sword pierced Jiang Wan's Su embroidery sachet, the blood oath made three hundred years ago came into effect again: he was the keykeeper placed in the craftsman's residence by the Jin Yiwei, and she was the Su embroidery assassin who was hunted down by the government. As the twin compasses rotated, the underground palace of the Forbidden City slowly opened - there sleeps China's last line of defense, the "Kiuzhou Cauldron Formation" guarded by Zeng Houyi's Chime Bell, and the traditional jade seal at the eye of the formation is being wrapped in layers of tapestry dragon robes repaired by Jiang Wan.
