Chen Liang, the founder of Guchi Robotics, an automation company headquartered in Shanghai, is a tall, heavy-set man in his mid-40s with square-rimmed glasses. His everyday manner is calm and understated, but when he is in his element – up close with the technology he builds, or in business meetings discussing the imminent replacement of human workers by robots – he wears an exuberant smile that brings to mind an intern on his first day at his dream job. Guchi makes the machines that install whe...