Yang Jun, a partner at Linear Capital, held a nearly 2-hour live Q&A with nearly 30 students from the University of Pennsylvania, sharing his experience from pursuing a PhD to founding a startup to investing, as well as his views on "early retirement," career choices, judging startup teams, and opportunities in mature markets. He advises that career choices follow passion and growth, and believes early retirement can be boring; Linear Capital focuses on seed to Series A, pays attention to technology-matching issues, judges teams by capability, willingness, and resilience, and cites Agile Robots as an example showing that technology that solves pain points can bring opportunities.