OpenAI engineer Hieu Pham, after enduring prolonged extreme work patterns and ethical anxiety, announced his resignation to return to Vietnam, sparking collective reflection within Silicon Valley's AI industry on its high-intensity work culture. With a background from top-tier institutions like Stanford and CMU, and having worked at companies such as Google and xAI, Hieu Pham's work experience epitomizes that of AI practitioners in Silicon Valley. It has been revealed that core members at companies like xAI and OpenAI commonly face a '0-0-2' work schedule—working from midnight to midnight the next day, with only 2 hours of rest on weekends. Under this model, six of xAI's twelve co-founders have departed, including key Chinese members Yuhuai Wu and Jimmy Ba, as well as Greg Yang, who exited due to health issues. Key figures such as Mrinank Sharma, head of Anthropic's safety team, and Jerry Tworek, a core developer of OpenAI's reasoning models, have also resigned. Industry surveys indicate that 68% of tech companies' AI tool expenditures have exceeded expectations, yet only 15% have achieved significant efficiency gains. Technical anxiety and existential crises are becoming widespread dilemmas among practitioners.