Nvidia reported a strong quarter with 69% growth, but warned of threats to its business due to US-China technology disputes.China's ban on open-source AI models like DeepSeek and Qwen could harm Nvidia's business.Nvidia CEO expressed mixed views on US export rules, praising Trump for repealing one but criticizing new restrictions imposed later.Despite limitations, Nvidia expects second-quarter sales of around $45 billion, showing a 50% increase from the previous year.