The blog discusses the controversial sale of reinforcement learning (RL) environments by American data companies to Chinese AI labs, which raises significant national security concerns. It examines the implications for U.S.-China relations in the AI space, detailing how American firms inadvertently aid Chinese labs in developing advanced AI capabilities, possibly in sensitive domains like cybersecurity and biotechnology. The author calls for a reevaluation of policies regarding the transfer of dual-use AI data and environments.