Linear Capital is a Shanghai-based frontier tech fund founded by Harry Wang, Facebook's first Chinese R&D manager, who brings a Silicon Valley engineering background to evaluating and supporting startups through an engineers backing engineers philosophy. The firm focuses exclusively on three AI-driven pillars—AI software and applications, AI hardware and robotics, and AI for science and manufacturing—while providing what founders describe as unusually hands-on technical feedback and emotional support, including late-night availability and help with hiring, customers, and strategic decisions.