Elephants perform dance at the Elephant Festival 2020 held in northern Lao province of Xayaboury on Feb. 22, 2020. The annual festival has been held since 2007 in Xayaboury province, which lasts from Feb. 22 to Feb. 28 this year. (Photo: Xinhua)

Elephants play basketball at the Elephant Festival 2020 held in northern Lao province of Xayaboury on Feb. 22, 2020. The annual festival has been held since 2007 in Xayaboury province, which lasts from Feb. 22 to Feb. 28 this year.

An elephant carries a kid at the Elephant Festival 2020 held in northern Lao province of Xayaboury on Feb. 22, 2020. The annual festival has been held since 2007 in Xayaboury province, which lasts from Feb. 22 to Feb. 28 this year.

Elephants interact with tourists at the Elephant Festival 2020 held in northern Lao province of Xayaboury on Feb. 22, 2020. The annual festival has been held since 2007 in Xayaboury province, which lasts from Feb. 22 to Feb. 28 this year.

An elephant plays basketball at the Elephant Festival 2020 held in northern Lao province of Xayaboury on Feb. 22, 2020. The annual festival has been held since 2007 in Xayaboury province, which lasts from Feb. 22 to Feb. 28 this year.

An elephant plays basketball at the Elephant Festival 2020 held in northern Lao province of Xayaboury on Feb. 22, 2020. The annual festival has been held since 2007 in Xayaboury province, which lasts from Feb. 22 to Feb. 28 this year.

Elephants perform dance at the Elephant Festival 2020 held in northern Lao province of Xayaboury on Feb. 22, 2020. The annual festival has been held since 2007 in Xayaboury province, which lasts from Feb. 22 to Feb. 28 this year.

An elephant plays basketball at the Elephant Festival 2020 held in northern Lao province of Xayaboury on Feb. 22, 2020. The annual festival has been held since 2007 in Xayaboury province, which lasts from Feb. 22 to Feb. 28 this year. (Photo by Kaikeo Saiyasane/Xinhua)

An elephant plays basketball at the Elephant Festival 2020 held in northern Lao province of Xayaboury on Feb. 22, 2020. The annual festival has been held since 2007 in Xayaboury province, which lasts from Feb. 22 to Feb. 28 this year.