China detained a 20-year-old blogger for nearly a week after she allegedly disrespected the country’s national anthem, Reuters reported Monday.

The blogger, Yang Kaili, was punished over a video posted to live-streaming site Weibo in which she appeared to mock the “March of the Volunteers” anthem.

“Hello, good evening, comrades,” Yang said in the video, after “humming marching music” and reciting part of the anthem while miming directing an orchestra, according to Reuters.

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Shanghai police told the news service that the video “was disrespectful to the dignity of the national anthem and invited disgust among netizens.”

Yang, who was detained for five days, apologized in another video, saying that she would “seriously watch patriotic publicity films,” conduct “self-rectification” and stop live-streaming.

Reuters reported that sports fans in Hong Kong have booed the Chinese national anthem as a way to protest Beijing’s authority.

China last year introduced a law that prohibits mocking the anthem, punishable by up to 15 days in police detention.

In the U.S., NFL players' behavior during the national anthem has sparked controversy in recent years. Players protesting police brutality and racial inequality have taken to kneeling during the anthem at games to draw attention to the issue, a move that has sparked backlash among conservatives and President Trump Donald John TrumpBiden on Trump's refusal to commit to peaceful transfer of power: 'What country are we in?' Romney: 'Unthinkable and unacceptable' to not commit to peaceful transition of power Two Louisville police officers shot amid Breonna Taylor grand jury protests MORE, who say that the players are disrespecting the anthem, the American flag and veterans.