The BBC reports that:

A cold snap sweeping across East Asia has killed at least 85 people in Taiwan and stranded 60,000 tourists in South Korea.
Taiwanese media reported deaths from hypothermia and cardiac disease following a sudden drop in temperature over the weekend.
Meanwhile heavy snow forced the closure of the airport on the Korean holiday island of Jeju, cancelling flights.
The cold spell has also hit Hong Kong, southern China and Japan….

In Hong Kong, residents shivered in 3C, the lowest temperature there in nearly 60 years.
Parts of Guangzhou and Shenzhen in southern China have also seen the rare appearance of snow, while the southern Japanese island of Okinawa has seen sleet for the first time ever, report Chinese and Japanese media….

Snowstorms have hit large parts of Japan as well, with more than 600 domestic flights cancelled across the country on Sunday and Monday, reported NHK news.
At least five people have died so far and more than 100 have been injured in Japan.
Temperatures have dropped in some parts of South East Asia as well, including Vietnam and Thailand.
In Bangkok, which rarely sees temperatures below 20C, temperatures dropped to around 16C on Sunday, while Vietnam saw the coldest weather in about two decades over the weekend, with Hanoi experiencing 6C.