Introduction
Oral antiretroviral medicine-based pre-exposure prophylaxis (PrEP) for HIV prevention has been widely acknowledged as a safe and effective tool for HIV prevention among gay, bisexual and other men who have sex with men (GBMSM) [While previous studies have indicated PrEP is highly acceptable among Chinese GBMSM [Informed by intensive formative research on mHealth-based intervention studies for HIV prevention among Chinese GBMSM [