粛

self-restraint

grave

(political) purge

enforcement of official discipline

refraining from going outside

cleaning up (political party)

school purge

self-appointed enforcer of business closure and stay-at-home requests during the COVID-19 pandemic

humble greeting at the beginning of a letter

Gansu Agricultural University

silent

withering

travel advisory

strict enforcement

Gansu Province (China)

Mishihase (ancient ethnic group of people who lived in northern Japan)

solemnly

silent

solemn

Dear (name)

regulation

silent

army purge