People participate in a boat performance during the 2019 Qintong Boat Festival held at Qinhu National Wetland Park in Jiangyan District of Taizhou, east China's Jiangsu Province, April 6, 2019. Hundreds of boats with more than 10,000 boat team members aboard gathered here on Saturday for the Qingtong Boat Festival, which has been a centuries-old tradition. (Photos: Xinhua)

In this aerial photo taken on April 6, 2019, people participate in a boat performance during the 2019 Qintong Boat Festival held at Qinhu National Wetland Park in Jiangyan District of Taizhou, east China's Jiangsu Province.

People participate in a boat performance during the 2019 Qintong Boat Festival held at Qinhu National Wetland Park in Jiangyan District of Taizhou, east China's Jiangsu Province, April 6, 2019.

In this aerial photo taken on April 6, 2019, people get ready for a boat performance during the 2019 Qintong Boat Festival held at Qinhu National Wetland Park in JiangyanDistrict of Taizhou, east China's Jiangsu Province.

In this aerial photo taken on April 6, 2019, people participate in a boat performance during the 2019 Qintong Boat Festival held at Qinhu National Wetland Park in Jiangyan District of Taizhou, east China's Jiangsu Province.

In this aerial photo taken on April 6, 2019, people participate in a boat performance during the 2019 Qintong Boat Festival held at Qinhu National Wetland Park in Jiangyan District of Taizhou, east China's Jiangsu Province.

In this aerial photo taken on April 6, 2019, people get ready for a boat performance during the 2019 Qintong Boat Festival held at Qinhu National Wetland Park in Jiangyan District of Taizhou, east China's Jiangsu Province.

In this aerial photo taken on April 6, 2019, people get ready for a boat performance during the 2019 Qintong Boat Festival held at Qinhu National Wetland Park in Jiangyan District of Taizhou, east China's Jiangsu Province.