A flag-raising ceremony is held at the Golden Bauhinia Square in Wan Chai, Hong Kong, on July 1, 2021 to mark the 24th anniversary of Hong Kong's return to the motherland. (CALVIN NG / CHINA DAILY)

HONG KONG - Flag-raising ceremonies and a series of events were held in Hong Kong Thursday morning as the special administrative region celebrates the 100th anniversary of the founding of the Communist Party of China and the 24th anniversary of Hong Kong’s return to the motherland.

Officials of the central government and the Hong Kong SAR government attended the flag-raising ceremonies, which were held at the Golden Bauhinia Square and the Liaison Office of the Central People’s Government in the Hong Kong SAR.

Acting Chief Executive of the Hong Kong SAR John Lee Ka-chiu delievered a speech at the reception, which was held at the Hong Kong Convention and Exhibition Centre.

READ MORE: Lee: 'One country, two systems' part of CPC's great achievements

A ceremony organized by the Hong Kong Celebrations Association was held later in the day. 

A ceremony celebrating the 24th anniversary of Hong Kong's return to the motherland and the 100th anniversary of the Communist Party of China is held at the Hong Kong Convention and Exhibition Centre on July 1, 2021. The ceremony is organized by the Hong Kong Celebrations Association. (EDMOND TANG / CHINA DAILY)

Singers perform at a ceremony organized by the Hong Kong Celebrations Association at the Hong Kong Convention and Exhibition Centre on July 1, 2021, in celebration of the 24th anniversary of Hong Kong's return to the motherland and the 100th anniversary of the Communist Party of China. (EDMOND TANG / CHINA DAILY)

Musicians perform at a ceremony organized by the Hong Kong Celebrations Association at the Hong Kong Convention and Exhibition Centre on July 1, 2021, in celebration of the 24th anniversary of Hong Kong's return to the motherland and the 100th anniversary of the Communist Party of China. (EDMOND TANG / CHINA DAILY)

Officials raise a toast at a reception celebrating the 24th anniversary of Hong Kong's return to the motherland at the grand hall of the Hong Kong Convention and Exhibition Centre on July 1, 2021. (CALVIN NG / CHINA DAILY)

Hong Kong Chief Secretary for Administration John Lee Ka-chiu delivers a speech at a reception celebrating the 24th anniversary of Hong Kong's return to the motherland at the grand hall of the Hong Kong Convention and Exhibition Centre on July 1, 2021. (CALVIN NG / CHINA DAILY)

Officials stand at attention as the honor guard carry the national flag and Hong Kong Special Administrative flag to a podium for flag raising at the Golden Bauhinia Square in Wan Chai, Hong Kong, July 1, 2021. (CALVIN NG / CHINA DAILY)

Officials attend a flag-raising ceremony at the Golden Bauhinia Square in Wan Chai, Hong Kong, on July 1, 2021 to mark the 24th anniversary of Hong Kong's return to the motherland. (CALVIN NG / CHINA DAILY)

Officials attend a flag-raising ceremony at the Golden Bauhinia Square in Wan Chai, Hong Kong, on July 1, 2021 to mark the 24th anniversary of Hong Kong's return to the motherland. (CALVIN NG / CHINA DAILY)

The disciplined forces perform a fly-past to mark the 24rd anniversary of Hong Kong's return to the motherland, in Hong Kong, July 1, 2021. (CALVIN NG / CHINA DAILY)

Parade guards march during a flag-raising ceremony at the Golden Bauhinia Square in Wan Chai, Hong Kong, on July 1, 2021. (CALVIN NG / CHINA DAILY)

Officials of the Liaison Office of the Central People's Government in the Hong Kong Special Administrative Region attend a flag-raising ceremony celebrating the 100th anniversary of the founding of the Communist Party of China and the 24th anniversary of Hong Kong’s return to the motherland on July 1, 2021. (EDMOND TANG / CHINA DAILY)

Officials of the Liaison Office of the Central People's Government in the Hong Kong Special Administrative Region attend a flag-raising ceremony celebrating the 100th anniversary of the founding of the Communist Party of China and the 24th anniversary of Hong Kong’s return to the motherland on July 1, 2021. (EDMOND TANG / CHINA DAILY)

A flag-raising ceremony is held at the Liaison Office of the Central People's Government in the Hong Kong Special Administrative Region in Hong Kong celebrating the 100th anniversary of the founding of the Communist Party of China and the 24th anniversary of Hong Kong’s return to the motherland on July 1, 2021. (EDMOND TANG / CHINA DAILY)