# What formats are supported for the assignments submitted by learners?
[中文](/books/bcbe3/page/a49e9)
The assignment content supports text, images, and voice, but does not support videos for now.
The maximum length of text is 10,000 characters; the maximum number of images is 9; the maximum duration of audio is 300 seconds, with a maximum of 60 seconds per voice message and a maximum of 5 messages. Each 60-second segment will be automatically saved, and recording of the next segment will start automatically.