Night view at site of Int'l Horticultural Exhibition 2019 Beijing China(1/9)

Computer-integrated aerial photo taken on March 26, 2019 shows the night view at the site of the International Horticultural Exhibition 2019 Beijing China (Expo 2019 Beijing) in Yanqing District of Beijing, capital of China. The 2019 Beijing International Horticultural Exhibition is slated to kick off on April 29, 2019. (Xinhua/Wang Jianhua)

Aerial photo taken on March 26, 2019 shows the night view of China Pavilion of the International Horticultural Exhibition 2019 Beijing China (Expo 2019 Beijing) in Yanqing District of Beijing, capital of China. The 2019 Beijing International Horticultural Exhibition is slated to kick off on April 29, 2019. (Xinhua/Wang Jianhua)

Aerial photo taken on March 26, 2019 shows the night view at the site of the International Horticultural Exhibition 2019 Beijing China (Expo 2019 Beijing) in Yanqing District of Beijing, capital of China. The 2019 Beijing International Horticultural Exhibition is slated to kick off on April 29, 2019. (Xinhua/Zhang Chenlin)

Aerial photo taken on March 26, 2019 shows the night view of China Pavilion of the International Horticultural Exhibition 2019 Beijing China (Expo 2019 Beijing) in Yanqing District of Beijing, capital of China. The 2019 Beijing International Horticultural Exhibition is slated to kick off on April 29, 2019. (Xinhua/Zhang Chenlin)

Aerial photo taken on March 26, 2019 shows the night view of China Pavilion of the International Horticultural Exhibition 2019 Beijing China (Expo 2019 Beijing) in Yanqing District of Beijing, capital of China. The 2019 Beijing International Horticultural Exhibition is slated to kick off on April 29, 2019. (Xinhua/Ma Xiaodong)

Aerial photo taken on March 26, 2019 shows the night view at the site of the International Horticultural Exhibition 2019 Beijing China (Expo 2019 Beijing) in Yanqing District of Beijing, capital of China. The 2019 Beijing International Horticultural Exhibition is slated to kick off on April 29, 2019. (Xinhua/Ju Huanzong)

Aerial photo taken on March 26, 2019 shows the night view of China Pavilion of the International Horticultural Exhibition 2019 Beijing China (Expo 2019 Beijing) in Yanqing District of Beijing, capital of China. The 2019 Beijing International Horticultural Exhibition is slated to kick off on April 29, 2019. (Xinhua/Ma Xiaodong)

Aerial photo taken on March 26, 2019 shows the night view of China Pavilion of the International Horticultural Exhibition 2019 Beijing China (Expo 2019 Beijing) in Yanqing District of Beijing, capital of China. The 2019 Beijing International Horticultural Exhibition is slated to kick off on April 29, 2019. (Xinhua/Zhang Chenlin)

Aerial photo taken on March 26, 2019 shows the night view of International Pavilion of the International Horticultural Exhibition 2019 Beijing China (Expo 2019 Beijing) in Yanqing District of Beijing, capital of China. The 2019 Beijing International Horticultural Exhibition is slated to kick off on April 29, 2019. (Xinhua/Ju Huanzong)