TOKYO -- Yi Gang, the powerful governor of the People's Bank of China, began a high-profile press conference last Sunday in an unusual way: with a somber analysis of the country's economy that implied serious self-criticism.

Beijing has tiptoed around the question of Chinese President Xi Jinping visiting U.S. President Donald Trump's Mar-a-Lago estate in late March. (Nikkei montage/Getty Images)
Yi Gang's public self-criticism designed to help top leaders