Refusing to take nucleic acid test or antigen self-testing could lead to legal punishment and demerits on personal credit account, according to legal experts in Shanghai.According to China's Law on the Prevention and Treatment of Infectious Diseases, companies and individuals within the country must accept the investigation, inspection, sample collection, quarantined treatment and other prevention and control measures.Those who refuse to carry out the orders issued by the government under emergency conditions could be detained by up to 10 days and fined up to 500 yuan (US$78.45), as per the nation's public security penalties law, Yuan Xinzhong, visiting professor of the Shanghai Academy of Social Sciences, pointed out.