A full-scale lockdown on China’s financial hub of Shanghai is likely to cost the economy 190 billion yuan ($29.8 billion) in two weeks, or 2 percent of gross domestic product (GDP), according to a minimum estimate by a Hong Kong economist. Almost 7 percent of the loss would be from the spillover effects to other cities, said Zheng Michael Song, an economics professor at the Chinese University of Hong Kong. The cost could reach 295 billion yuan ($63 billion), or 3.1 percent of GDP, if one-tenth of Chinese cities entered into lockdown for two weeks, Song said in a recent article. Song, along with four other economic researchers from the United States, Hong Kong, and mainland China, used city-to-city truck flow data from the real-time location of 1.8 million trucks to measure the economic impact of China’s lockdowns. The research came amid concerns that the lockdown in Shanghai, China’s financial …