The 122nd session of the Fudan Finance public course, reported by Fudan Finance Review, hosted a dialogue on how open-source models affect business, the economy and society, with Wei Shangjin moderating, Tsinghua University's Xie Danxia speaking and Fuzhou Foreign Languages and Trade University's Liu Chu joining. Xie framed open source as a "knowledge institution" akin to patents and copyrights, with openness, sharing, collaboration and inclusion as its four principles, and listed technical support subscriptions, dual licensing, open core, hosting services and hardware bundles as monetization paths. Participants noted that open weights do not require free labor, citing DeepSeek, Meta's Llama, OpenAI and Anthropic as contrasting strategies, and debated when a startup should open, how openness affects employment across skill levels, and whether Chinese and US model development mutually reinforce each other.