Visitors are seen on the South Korea Day of Beijing International Horticultural Exhibition in Beijing, capital of China, on May 25, 2019. The expo kicked off its South Korea Day event on Saturday. (Xinhua/Zhang Chenlin)

Visitors are seen on the South Korea Day of Beijing International Horticultural Exhibition in Beijing, capital of China, on May 25, 2019. The expo kicked off its South Korea Day event on Saturday. (Xinhua/Zhang Chenlin)

Performers are seen on the South Korea Day of Beijing International Horticultural Exhibition in Beijing, capital of China, on May 25, 2019. The expo kicked off its South Korea Day event on Saturday. (Xinhua/Zhang Chenlin)

Performers are seen on the South Korea Day of Beijing International Horticultural Exhibition in Beijing, capital of China, on May 25, 2019. The expo kicked off its South Korea Day event on Saturday. (Xinhua/Zhang Chenlin)

Visitors are seen on the South Korea Day of Beijing International Horticultural Exhibition in Beijing, capital of China, on May 25, 2019. The expo kicked off its South Korea Day event on Saturday. (Xinhua/Zhang Chenlin)

Performers are seen on the South Korea Day of Beijing International Horticultural Exhibition in Beijing, capital of China, on May 25, 2019. The expo kicked off its South Korea Day event on Saturday. (Xinhua/Zhang Chenlin)

People watch a performance on the South Korea Day of Beijing International Horticultural Exhibition in Beijing, capital of China, on May 25, 2019. The expo kicked off its South Korea Day event on Saturday. (Xinhua/Zhang Chenlin)