People take part in tree-themed activities in Haig Park of Canberra
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People take part in tree-themed activities in the Haig Park of Canberra, Australia, May 8, 2021. After a hiatus in 2020, Canberra Tree Week returns this year and is held from May 1 to May 9 with a variety of tree-themed events. (Photo by Chu Chen/Xinhua)

People take part in tree-themed activities in the Haig Park of Canberra, Australia, May 8, 2021. After a hiatus in 2020, Canberra Tree Week returns this year and is held from May 1 to May 9 with a variety of tree-themed events. (Photo by Chu Chen/Xinhua)

A woman takes part in a tree-themed activity in the Haig Park of Canberra, Australia, May 8, 2021. After a hiatus in 2020, Canberra Tree Week returns this year and is held from May 1 to May 9 with a variety of tree-themed events. (Photo by Chu Chen/Xinhua)

People take part in tree-themed activities in the Haig Park of Canberra, Australia, May 8, 2021. After a hiatus in 2020, Canberra Tree Week returns this year and is held from May 1 to May 9 with a variety of tree-themed events. (Photo by Chu Chen/Xinhua)

People take part in tree-themed activities in the Haig Park of Canberra, Australia, May 8, 2021. After a hiatus in 2020, Canberra Tree Week returns this year and is held from May 1 to May 9 with a variety of tree-themed events. (Photo by Chu Chen/Xinhua)

A boy takes part in a tree-themed activity in the Haig Park of Canberra, Australia, May 8, 2021. After a hiatus in 2020, Canberra Tree Week returns this year and is held from May 1 to May 9 with a variety of tree-themed events. (Photo by Chu Chen/Xinhua)

A boy takes part in a tree-themed activity in the Haig Park of Canberra, Australia, May 8, 2021. After a hiatus in 2020, Canberra Tree Week returns this year and is held from May 1 to May 9 with a variety of tree-themed events. (Photo by Chu Chen/Xinhua)

People take part in tree-themed activities in the Haig Park of Canberra, Australia, May 8, 2021. After a hiatus in 2020, Canberra Tree Week returns this year and is held from May 1 to May 9 with a variety of tree-themed events. (Photo by Chu Chen/Xinhua)