In what way do mainlanders send private messages to Hong Kong and Taiwan stars?

1. Social media platforms: Many Hong Kong and Taiwan stars will open accounts on social media platforms, such as Sina Weibo and Instagram. You can follow them on these platforms and leave messages or private messages under their Weibo.

2. Fan clubs or forums: Many Hong Kong and Taiwan stars will have their own fan clubs or forums in the Mainland. You can join these clubs or forums, and then post in the forums or send private messages to the stars.