A student walks past jacaranda trees at University of Sydney in Sydney, Australia, Nov. 5, 2019. (Xinhua/Bai Xuefei)

Photo taken on Nov. 4, 2019 shows clouds above jacaranda trees at Kirribilli in Sydney, Australia. (Xinhua/Bai Xuefei)

A student walks past jacaranda trees at University of Sydney in Sydney, Australia, Nov. 5, 2019. (Xinhua/Bai Xuefei)

A student takes photos under a jacaranda tree at University of Sydney in Sydney, Australia, Nov. 5, 2019. (Xinhua/Bai Xuefei)

Photo taken on Nov. 5, 2019 shows the moon above jacaranda trees at University of Sydney in Sydney, Australia. (Xinhua/Bai Xuefei)

Visitors pose for photos under jacaranda trees at Kirribilli in Sydney, Australia, Nov. 4, 2019. (Xinhua/Bai Xuefei)

Photo taken on Nov. 4, 2019 shows a Qantas airplane flying above jacaranda trees at Kirribilli in Sydney, Australia. (Xinhua/Bai Xuefei)

Jacaranda blossoms are seen at University of Sydney in Sydney, Australia, Nov. 5, 2019. (Xinhua/Bai Xuefei)