In 1998, Lu Dongyang came to Dongguan to seek help from his cousin. Aside from two hundred yuan, the most valuable things in his pockets were an old envelope and a promise he had made to a girl he had never met. Then his cousin suddenly disappeared, he couldn't find a job, and he was even made a scapegoat. But Lu Dongyang refused to give up and proved himself through his actions. From two hundred yuan to twenty million, from a snakeskin sack to an office tower. This is Lu Dongyang's Dongguan, and the Dongguan of millions of migrant workers.