A flag-raising ceremony is held during the opening ceremony of a photo exhibition to celebrate the 25th anniversary of Hong Kong's return to motherland, at Pui Kiu Middle School in Hong Kong on July 9, 2022. (CALVIN NG / CHINA DAILY)

HONG KONG – A photo exhibition was held at Pui Kiu Middle School on Saturday to help students understand the history of Hong Kong as the special administrative region marks the 25th anniversary of its establishment this year.

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Yin Zonghua, deputy director of the Liaison Office of the Central People's Government in the Hong Kong Special Administrative Region, was among guests attending the opening ceremony.

Calvin Ng of China Daily captured the celebratory moments.

Students march during the opening ceremony of a photo exhibition to celebrate the 25th anniversary of Hong Kong's return to motherland, at Pui Kiu Middle School in Hong Kong on July 9, 2022. (CALVIN NG / CHINA DAILY)

A flag-raising ceremony is held during the opening ceremony of a photo exhibition to celebrate the 25th anniversary of Hong Kong's return to motherland, at Pui Kiu Middle School in Hong Kong on July 9, 2022. (CALVIN NG / CHINA DAILY)

People look at photos on display at an exhibition to mark the 25th anniversary of Hong Kong's return to its motherland, at Pui Kiu Middle School in Hong Kong, on July 9, 2022. (CALVIN NG / CHINA DAILY)

A school staff member explains the information on display to visitors during a photo exhibition to celebrate the 25th anniversary of Hong Kong's return to motherland, at Pui Kiu Middle School in Hong Kong on July 9, 2022. (CALVIN NG / CHINA DAILY)

Students admire photos on display at an exhibition to mark the 25th anniversary of Hong Kong's return to its motherland, at Pui Kiu Middle School in Hong Kong, on July 9, 2022. (CALVIN NG / CHINA DAILY)

A visitor looks at the information on display in a photo exhibition to mark the 25th anniversary of Hong Kong's return to its motherland, at Pui Kiu Middle School in Hong Kong, on July 9, 2022. (CALVIN NG / CHINA DAILY)

Visitors look at the information on display in a photo exhibition to mark the 25th anniversary of Hong Kong's return to its motherland, at Pui Kiu Middle School in Hong Kong, on July 9, 2022. (CALVIN NG / CHINA DAILY)

A school staff member explains the information on display to Yin Zonghua, deputy director of the Liaison Office of the Central People's Government in the Hong Kong Special Administrative Region, during a photo exhibition to celebrate the 25th anniversary of Hong Kong's return to motherland, at Pui Kiu Middle School in Hong Kong on July 9, 2022. (CALVIN NG / CHINA DAILY)