BEIJING — Chinese leaders have often accused those who disagree with them of “hurting the feelings of 1.3 billion Chinese.” Getting into the spirit, Taiwanese and Hong Kongers are responding enthusiastically to a satirical Facebook page calling on them to say “sorry” to China.

Sorry for anything, and everything.

The reasons for contrition so far have included living under a blue sky (China’s skies are chronically polluted); eating clean food (food safety is a major challenge in China); and locking the door when using the toilet (not always done on the mainland).

“I’m sorry, I don’t write simplified characters,” wrote Ziyou, referring to the writing style of mainland China, but not Hong Kong or Taiwan, in apologizing for being different from Beijing. The commenter’s name is itself a clever pun. It means “character travel,” but is a homophone for “freedom.”

The Facebook page comes as actors and other celebrities across Asia and the United States find themselves the target of rising Chinese nationalism, their careers vulnerable to the scrutiny of thousands of “patriots” ready to sniff out perceived disloyalty to the Communist Party. They may be accused of being “poisonous,” “traitors” or “anti-China elements,” often for gestures or statements that are considered normal in their places of birth. Some have been pressured to issue videotaped or written apologies.