Lu Zheng bet nine years of his youth on Huaqing, accompanying the Shen family from a small office to a 2.8 billion valuation. When the board voted to fire him, his girlfriend Shen Mingxi cast a vote in favor. Seventy-four million in accident losses were pinned on him, and an industry-wide notice blocked all retreats. Lu Zheng did not accept it. He sold his house, gathered the technical backbone driven away by the Shen family, and founded Tianheng in an old factory building. Starting from retrofitting abandoned drones in mining areas, step by step they secured tens of millions in orders and independently developed a highly reliable flight control system. This is a story about betrayal and rebirth, taking flight once again from the ruins.