Stocks were up sharply in Tokyo on Monday after Joe Biden's victory in the US presidential election ended the uncertainty during the vote count.
The benchmark Nikkei Average ended the morning session at 24,799, up 473 points or 1.95 percent compared to Friday's close. The Nikkei extended its gain this month to about 8 percent and is at the highest level in 29 years.
Japanese government officials are preparing to send out over 2.5 million face masks from their stockpiles to medical and other facilities facing a serious shortage due to the coronavirus outbreak.
The government decided to release the masks out of some 6.4 million kept at ministries and agencies in case of disasters or other emergencies.
The Japanese government and the Bank of Japan held an emergency meeting on Tuesday to discuss the plunge in Tokyo stocks, caused by anxiety about the impact of the coronavirus outbreak on the global economy.
The meeting brought together senior officials from the BOJ, the Finance Ministry and the Financial Services Agency.
Nikkei index has been tumbling due to concerns about the impact of the new coronavirus.
The key gauge lost about 500 points, or more than 2 percent at one stage on Monday morning.