1 : Starting from Today, all passengers who enter Japan must submit the  "Written Pledge".

https://www.mofa.go.jp/files/100131080.pdf

2: Starting from 21 January, All foreginers can’t enter Japan (except foreigner with the status of residence in Japan)

Consulate of General of Japan in Hong Kong has already stop to issue visa.

https://www.mofa.go.jp/ca/cp/page22e_000925.html