Nvidia's CEO, Jensen Huang, made a surprise visit to Beijing after the US imposed fresh restrictions on chip sales to China.Huang visited on invitation of a trade organization and met with Chinese officials, expressing a desire to continue cooperation with China.The visit followed US restrictions on sales of Nvidia's H20 datacentre GPUs designed to comply with Biden-era rules on sales to China.The restrictions are part of the US-China battle for AI supremacy and are expected to cost Nvidia $5.5bn in earnings.The tech industry, including Nvidia, faces pressure from US restrictions and tariffs on tech supplies to China.Nvidia recently announced plans to invest in AI infrastructure in the US, aligning with the Trump administration's policies.The company may work on new chip designs for an AI company, DeepSeek, to circumvent US bans on certain technologies.Huang stated Nvidia's commitment to legal compliance and technological advancement, emphasizing the global progress of AI.Huang's visit stirred reactions on social media, highlighting his celebrity status in Taiwan and the impact of Trump's tariffs on global markets.Trump's trade policies, including tariffs and negotiations with countries like Japan, have caused chaos and uncertainty in global trade relations.