People watch aircrafts flying by during the National Day celebrations at the Merlion Park in Singapore, Aug. 9, 2020. (Xinhua/Then Chih Wey)

Helicopters fly with Singapore's national flag during the National Day celebrations in Singapore, Aug 9, 2020. (Xinhua/Then Chih Wey)

Aircrafts fly in formation during the National Day celebrations in Singapore, Aug. 9, 2020. (Xinhua/Then Chih Wey)

People watch the National Day celebrations in Singapore, Aug. 9, 2020. (Xinhua/Then Chih Wey)

Aircrafts fly in formation during the National Day celebrations in Singapore, Aug. 9, 2020. (Xinhua/Then Chih Wey)

Two women have a photo taken with Singapore's national flag during the National Day celebrations at the Merlion Park in Singapore, Aug. 9, 2020. (Xinhua/Then Chih Wey)

Fireworks light up the sky during the National Day celebrations held in Singapore on Aug. 9, 2020. (Xinhua/Then Chih Wey)

Fireworks light up the sky during the National Day celebrations held in Singapore on Aug. 9, 2020. (Xinhua/Then Chih Wey)

Fireworks light up the sky during the National Day celebrations held in Singapore on Aug. 9, 2020. (Xinhua/Then Chih Wey)