Chinese state media account Yuyuan Tantian raises security concerns about Nvidia's H20 chips, claiming they lack technological advancement and environmental safety while suggesting potential backdoor risks. The chips, initially banned by the U.S. in April 2025 due to trade tensions, had their sales reinstated in July. Nvidia asserts its products contain no backdoors, a statement reiterated amid demands for proof of security to regain trust in the Chinese market.