Jensen Huang, chief executive officer of Nvidia Corp. (NASDAQ:NVDA), reportedly visited China for the first time in four years, a tour that comes as the U.S.-China tech rivalry intensifies. What Happened: Huang was seen at Nvidia’s offices in Shenzhen, Shanghai, and Beijing early this month, reported Bloomberg, citing a person familiar with the matter. Images and videos of his interaction with staff in traditional attire were posted online over the weekend. The exact purpose of Huang’s visit remains undisclosed, as sources could not confirm the occurrence of any official meetings. See Also: Af…