Why China Is the World’s Last ‘Zero Covid’ Holdout. The government has staked its political legitimacy on controlling the virus better than other countries, especially its geopolitical rivals. The trip began in Shanghai, where the couple, both former professors, joined a tour group of other retirees. They traveled through Gansu Province and Inner Mongolia, staying at a bed-and-breakfast and eating three times at the same lamb chop restaurant. Flying south to Xi’an, they dropped in to a 1,300-year-old temple. Their fellow tour group members checked out an art museum, strolled through parks and visited friends.