In a letter addressed to schools across Hong Kong, the Education Bureau (EDB) says that wearing masks in regulated public events or unlawful assemblies is an offence. It also said that students should not be wearing masks in school, unless they were for health or religious reasons; students who are ill should stay at home.
The letter states that teachers and parents should “set a good example” for students, and that the school was not a place to express political views.
The EDB also warned students "to put safety first at all times and return home as soon as possible after school. They should not wander on the streets or go to potentially dangerous places, and should never participate in unlawful activities".