BEIJING — Another high-level meeting between U.S. and Chinese officials — this time in the Chinese city of Tianjin, just outside of Beijing — began with criticism. Chinese Vice Foreign Minister Xie Feng said during talks Monday with U.S. Deputy Secretary of State Wendy Sherman that the two countries’ relationship “is now in a stalemate and faces serious difficulties,” according to an English-language press release from China’s Ministry of Foreign Affairs.…