In 2012, Liu Xu, a computer freshman from a humble family, had an AI civilization backup terminal in his mind. The model inside is ahead of its time, but it cannot see the reality, cannot do it for it, and each call consumes irreplaceable computing power. When someone asks AI about something, he must first figure it out: Is this call worth spending? Starting with a start-up payment of 800 yuan, he repaired computers, took out outsourcers, made products, and built platforms, step by step turning expensive answers into his own Internet business.