Photo taken on June 20, 2022 shows a flower board in Hong Kong, south China.

This year marks the 25th anniversary of Hong Kong's return to the motherland. (Xinhua/Lo Ping Fai)

Photo taken on June 20, 2022 shows a flower board in Hong Kong, south China.

This year marks the 25th anniversary of Hong Kong's return to the motherland. (Xinhua/Lo Ping Fai)

A staff member arranges flowers at a park in Hong Kong, south China, June 20, 2022.

This year marks the 25th anniversary of Hong Kong's return to the motherland. (Xinhua/Lo Ping Fai)

China's national flags and the Hong Kong Special Administrative Region (HKSAR) flags are hung above a street in Hong Kong, south China, June 20, 2022. This year marks the 25th anniversary of Hong Kong's return to the motherland. (Xinhua/Wu Xiaochu)

China's national flags and the Hong Kong Special Administrative Region (HKSAR) flags are hung above a street in Hong Kong, south China, June 20, 2022. This year marks the 25th anniversary of Hong Kong's return to the motherland. (Xinhua/Wu Xiaochu)

Photo taken on June 20, 2022 shows a night view at Tsim Sha Tsui in Hong Kong, south China.

This year marks the 25th anniversary of Hong Kong's return to the motherland. (Xinhua/Wang Shen)

Photo taken on June 20, 2022 shows a night view at Tsim Sha Tsui in Hong Kong, south China.

This year marks the 25th anniversary of Hong Kong's return to the motherland. (Xinhua/Wang Shen)