Covid-19 cases: China locks down Shenyang

China has locked down Shenyang, an industrial city of 9 million people, and reported more than 4,700 virus cases on Tuesday, as the nation’s “zero-Covid” strategy is confronted by an Omicron wave. China has reported more than 30000 new cases this month. Some 12,000 new cases have been reported in the past three days alone, according to health officials, who have warned the country's defenses are facing the highly transmissible Omicron subvariant BA.2 for the first time.