The U.S. State Department said on Monday that the Chinese government had blocked a U.S. Patent and Trademark Office employee visiting the Asian country in a personal capacity from leaving. "We are tracking this case very closely and are engaged with Chinese officials to resolve the situation as quickly as possible,

A Wells Fargo banker has been blocked from leaving China due to a criminal matter, the country's foreign ministry has confirmed. Chenyue Mao "is involved in a criminal case currently being handled by Chinese law-enforcement authorities and is subject to exit restrictions in accordance with the law",

Despite spotlight on Chenyue Mao case, foreign ministry says it will ‘welcome people from all countries to travel and do business in China’.