When the 33-year-old ruins restorer Mo Qi entered the Wordless Workshop in Shenzhen Zhu Valley, his sponsor, the Gu family, only gave him three days: he had to come up with a set of conclusions that could be packaged as a "lost ancient method." But there are no skills or secret scrolls in the ruins. There are only tools with broken handles, half-finished weapons, failure samples and the wear marks left by the years. Mo Qi chose re-engraved tools, tried and errored again and again with limited ancient materials, and eliminated erroneous processes from the wear direction, thermal history and repair marks. Every wrong assumption comes at the cost of materials and deadlines, and the Gu family constantly changes their methods, trying to turn unproven conclusions into market stories. When a truly reproducible process gradually emerges, Mo Qi must choose between restoring the truth, guarding his research qualifications, and acknowledging the boundaries of his method. The deeper he went into the ruins, the more he discovered that what was truly lost was not a secret book that could be copied, but a way of reading craftsmanship from failures and artifact marks.