A woman and her child visit the 2020 Beijing International Light Festival at Yuyuantan Park in Beijing, capital of China, Aug. 20, 2020. The 2020 Beijing International Light Festival kicked off at Yuyuantan Park in Beijing on Thursday. The exhibition mixed light, laser light, images, music and performances with the natural landscape of the park, providing an immersive experience for visitors. (Xinhua/Zhang Chen)

Photo taken on Aug. 20, 2020 shows a light installation at the 2020 Beijing International Light Festival at Yuyuantan Park in Beijing, capital of China. The 2020 Beijing International Light Festival kicked off at Yuyuantan Park in Beijing on Thursday. The exhibition mixed light, laser light, images, music and performances with the natural landscape of the park, providing an immersive experience for visitors. (Xinhua/Zhang Chen)

A girl visits the 2020 Beijing International Light Festival at Yuyuantan Park in Beijing, capital of China, Aug. 20, 2020. The 2020 Beijing International Light Festival kicked off at Yuyuantan Park in Beijing on Thursday. The exhibition mixed light, laser light, images, music and performances with the natural landscape of the park, providing an immersive experience for visitors. (Xinhua/Zhang Chen)

Leaves are silhouetted against ilumination at the 2020 Beijing International Light Festival at Yuyuantan Park in Beijing, capital of China on Aug. 20, 2020. The 2020 Beijing International Light Festival kicked off at Yuyuantan Park in Beijing on Thursday. The exhibition mixed light, laser light, images, music and performances with the natural landscape of the park, providing an immersive experience for visitors. (Xinhua/Zhang Chen)

Visitors take photos during the 2020 Beijing International Light Festival at Yuyuantan Park in Beijing, capital of China, Aug. 20, 2020. The 2020 Beijing International Light Festival kicked off at Yuyuantan Park in Beijing on Thursday. The exhibition mixed light, laser light, images, music and performances with the natural landscape of the park, providing an immersive experience for visitors. (Xinhua/Zhang Chen)

A woman visits the 2020 Beijing International Light Festival at Yuyuantan Park in Beijing, capital of China, Aug. 20, 2020. The 2020 Beijing International Light Festival kicked off at Yuyuantan Park in Beijing on Thursday. The exhibition mixed light, laser light, images, music and performances with the natural landscape of the park, providing an immersive experience for visitors. (Xinhua/Zhang Chen)