Actors perform during the "Shaanxi Day" event at the Beijing International Horticultural Exhibition in Beijing, capital of China, Aug. 22, 2019. The expo held its "Shaanxi Day" event on Thursday. (Photos: Xinhua/Zhang Chenlin)

Visitors tour the Shaanxi Garden at the Beijing International Horticultural Exhibition in Beijing, capital of China, Aug. 22, 2019. The expo held its "Shaanxi Day" event on Thursday.

Visitors tour the Shaanxi Garden at the Beijing International Horticultural Exhibition in Beijing, capital of China, Aug. 22, 2019. The expo held its "Shaanxi Day" event on Thursday.

Actors perform during the "Shaanxi Day" event at the Beijing International Horticultural Exhibition in Beijing, capital of China, Aug. 22, 2019. The expo held its "Shaanxi Day" event on Thursday.

Visitors tour the Shaanxi Garden at the Beijing International Horticultural Exhibition in Beijing, capital of China, Aug. 22, 2019. The expo held its "Shaanxi Day" event on Thursday.

Actors perform during the "Shaanxi Day" event at the Beijing International Horticultural Exhibition in Beijing, capital of China, Aug. 22, 2019. The expo held its "Shaanxi Day" event on Thursday.

Actors perform during the "Shaanxi Day" event at the Beijing International Horticultural Exhibition in Beijing, capital of China, Aug. 22, 2019. The expo held its "Shaanxi Day" event on Thursday.

Actors perform during the "Shaanxi Day" event at the Beijing International Horticultural Exhibition in Beijing, capital of China, Aug. 22, 2019. The expo held its "Shaanxi Day" event on Thursday.