The Legislative Council of Hong Kong passed a law on Thursday that criminalizes the mockery of China’s national anthem.

Under the new law, which was passed to “preserve the dignity of the national anthem,” individuals are not allowed to alter the lyrics of the national anthem, play or sing it in a “distorted or disrespectful way,” or publicly or intentionally insult it. Individuals are also not allowed to use China’s national anthem for commercials or for private funerals.

The law was originally introduced in 2019, but it was not passed until Thursday. Thursday was also the thirty-first anniversary of the Tienanmen Square massacre.