Twenty-two fan accounts have been suspended by Chinese social media site Sina Weibo for what it called "irrational star-chasing behaviour".
They include fans of Korean pop band BTS who crowdfunded on the platform to customise an aeroplane for singer Park Ji-Min's 26th birthday.
Weibo accused one fan account of "illegal fundraising" for the stunt.
In a statement, the company said it "firmly opposes such irrational star-chasing behaviour and will deal with it seriously".
