Beijing LGBT Center became the latest group to stop operations "due to forces beyond our control".
"Organisers have been detained, and their friends and family members have been questioned by the police. This results in a lot of mental health pressure," said the activist, who spoke on condition of anonymity.
"Before the pandemic, the environment for LGBT groups was great. We could speak out loud and we won some legal cases," the activist added.
"I think we were too loud."