The 12-year-old victim knelt as a group of teenagers, aged 12 to 19, slapped her alternately in the face on the roof of a five-story building on Luen Yan Street in Tsuen Wan shortly before 5:30 a.m. Saturday. . In the video, the victim, dressed in a white top, black hood and blue jeans, does not try to avoid any of the 21 slaps he suffers. The teenagers speak Mandarin and Cantonese throughout the videotaped attack. More from NextShark: Police release images of armed robber who attacked two people with a knife in New York “Half the people in Hong Kong hate it [the victim]”, Can be heard saying an attacker. “How dare he return to Hong Kong,” says another person. “Hiter harder” is also heard by one of the teens in the video. More from NextShark: Queens City Councilman Peter Koo attacked and robbed, believes he had no “racist motives” The victim was taken to Pok Oi Hospital to treat the injuries she sustained on her face during the attack. The 12-year-old was considered suspected of leaving provocative messages on the internet that had offended the 15-year-old, who is the first to slap the victim in the video. She is said to be the “big sister” of a suspected juvenile gang in Tsuen Wan. The Tsuen Wan criminal investigation unit began searching for five girls from China in connection with the attack, after the victim’s father reported the incident to police on Sunday. Five teenagers have since been arrested in connection with the incident, according to The Standard. More from NextShark: NYPD is looking for a man who hit an Asian subway rider with a hammer after falling on each other The incident is characterized as an attack that caused real bodily harm. The offense is punishable by imprisonment for up to three years in accordance with the Ordinance on Offenses against the Person. The story goes on The video is the latest to go viral in China over shocking gender-based violence. Footage from last Friday, in which a group of men beat two women at a restaurant in Tangshan, has upset the country and increased calls to the authorities to act. More from NextShark: Legendary Chinese-American businesswoman Shirley Young dies at 85 Selected image via ChanelCHK