Lanterns are hung above a corridor in Hong Kong, south China, June 19, 2022. This year marks the 25th anniversary of Hong Kong's return to the motherland.Photo:Xinhua

A tram covered with celebratory decoration is seen in Hong Kong, south China, June 19, 2022.Photo:Xinhua

China's national flags and the Hong Kong Special Administrative Region (HKSAR) flags are hung above a street in Hong Kong, south China, June 19, 2022.Photo:Xinhua

Celebratory posters are seen at a street in Hong Kong, south China, June 19, 2022.Photo:Xinhua

A celebratory decoration is illuminated for the 25th anniversary of Hong Kong's return to the motherland in Hong Kong, south China, June 18, 2022.Photo:Xinhua

A celebratory decoration is illuminated for the 25th anniversary of Hong Kong's return to the motherland in Hong Kong, south China, June 18, 2022.Photo:Xinhua

People walk past a celebratory decoration illuminated for the 25th anniversary of Hong Kong's return to the motherland in Hong Kong, south China, June 18, 2022.Photo:Xinhua

A slogan celebrating the 25th anniversary of Hong Kong's return to the motherland is displayed on an electronic screen of a building in Hong Kong, south China, June 19, 2022.Photo:Xinhua