Abstract: Disclosed is a face mask that facilitates switching display images. The face mask includes: a housing, where a mounting groove of a certain depth is formed on a surface of the housing; a lamp panel display screen, where the lamp panel display screen is arranged in the mounting groove, sealed and fixed through glue filling; a control module, a microphone and a storage module are further arranged in the mounting groove, and the control module is electrically connected to the microphone, the storage module and the lamp panel display screen; and the storage module stores various different images, the lamp panel display screen is configured for displaying images stored in the storage module, the microphone is configured for picking up a control signal from a user, and the control module receives the control signal and switches an image on the lamp panel display screen according to the control signal.

Abstract: Disclosed are a crystalline form of a five-membered N heterocyclic compound, particularly, a crystalline form of a compound as represented by formula I, and an application of the crystalline form in preparation of a medication for preventing or treating a disease benefiting from inhibition of capsid protein assembly.

Abstract: Disclosed are a crystalline form of a five-membered N heterocyclic compound, particularly, a crystalline form of a compound as represented by formula I, and an application of the crystalline form in preparation of a medication for preventing or treating a disease benefiting from inhibition of capsid protein assembly.