In the early Tang Dynasty, the empress came to power, and the "Tiangong Division" monopolized the promotion channels for craftsmen, and craftsmen were classified as lowly. The protagonist Su Jiuzhang traveled through time and became the concubine of a blacksmith in Nan City, Luoyang, but was sentenced to death for making a mistake in repairing the arch of Wuzhou Mingtang. In a desperate situation, he activated "Luban's Relic" - the carbon-based chip materialized, and when he reforged the guillotine, he awakened the metal fatigue detection ability. By repairing the broken iron scimitar of the Persian caravan, he obtained the support of Hu merchants to establish an underground workshop.
Later, Su Jiuzhang's development of a hydraulic forging hammer triggered suppression by the Tiangong Division, but he was summoned to the palace for improving the "Nine Dragons Tongtian Cauldron". During this period, the carbon-based chip analyzed the bronze formula and reproduced the lost chromium salt plating technology of "King Goujian Sword of Yue". The empress used the "Auspicious Forging" to support poor craftsmen and fight against the generals controlled by Li Tang's old ministers.
But Su Jiuzhang's invention was not all smooth sailing. His design of "Self-Minging Palace Leakage" was criticized by Confucianists, but he saved the Luoyang granary because of his prediction of a solar eclipse. He also used saltpeter ice-making technology to attack Buddhism as a "Xuanwu Manifestation". It turns out that the carbon-based chip was left behind by the first-generation craftsman Sheng Luban, who traveled through time, and needs to collect the Jiuding fragments to unlock it.
The Turkic wolf guards brought Greek fire to attack Chang'an. Su Jiuzhang broke through the situation with the "Three Skills of Exploring Things". He surpassed his class and was awarded the title of "Tiangonghou", but he fell into the "Nine Locks of Public Transport" set up by the aristocratic family and the Mohist family.
Finally, the ultimate secret of Luban's box was revealed. The carbon-based chip was actually the seeder of interstellar civilization, requiring him to choose to become an immortal mechanical holy body to protect the dynasty or to destroy the technological fire and return to mortals. Su Jiuzhang blew up the core of the chip and hid the "Tiangong Gewu Tu" in the caravan cargo box, leaving endless reverie in the ending. "To strike iron, you need to be tough yourself.
