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Beijing has issued a blue alert for severe air pollution, which is forecast to peak on Tuesday and ease that night, the city's environmental authority said on Monday.

Before the collision, the sailing yacht was competing in the fourth leg (Melbourne to Hong Kong) of the around-the-world race and had only 30 nautical miles left to finish.

Before traveling to other cities, the public is advised to get in touch with officials in their destinations in advance to learn about local disease control policies and make preparations accordingly. Masks and hand sanitizers are also recommended during transit.

Beijing also urged Washington and Seoul not to worsen tension, Wang added.

Because of the pandemic, cruises were suspended on Jan 22.