Exporters are finding roundabout ways to reach Beijing.
Coronavirus infections are also climbing in India, Iran and the U.S.
Beijing denies the forced labour claim as a U.K. chain investigates.
Anti-government demonstrations are showing no end in sight.
The last major outbreak was in 2009.
"The chill is real."
The trade war with the U.S. and a slump in consumer demand has hit China's once-booming economy.
Passages in sensitive waters near the mainland usually anger Beijing.
Carrie Lam says the government won't bow to other demands.
The region's chief executive warns of going down "a path of no return."