The domestic alternative to Instagram is Xiaohongshu (RedNote).
Tips
culture
Blocked in mainland China since 2014 (after the Hong Kong Umbrella Movement). Domestic platforms 小红书 (RedNote) and 微博 fill similar niches; the term ins风 (Instagram-style aesthetic) remains a marketing buzzword despite the block.
In Pop Culture
INSINS
Ins (common nickname)
Chinese users routinely abbreviate Instagram as 'ins' in text — e.g. 发ins (to post to Instagram), ins风 (Instagram-aesthetic). Pronounced as English letters or as 'yīn-sī'.