Li Yang (L) of China competes during the men's qualifcation round 1 match between Gao Peng/Li Yang of China and Maciej Rudol/Jakub Szalankiewicz of Poland at the 2019 FIVB Beach Volleyball World Tour, July 30, 2019. Maciej Rudol/Jakub Szalankiewicz won 2-1. (Xinhua/Guo Chen)

Maciej Rudol (L) of Poland competes during the men's qualifcation round 1 match between Gao Peng/Li Yang of China and Maciej Rudol/Jakub Szalankiewicz of Poland at the 2019 FIVB Beach Volleyball World Tour, July 30, 2019. Maciej Rudol/Jakub Szalankiewicz won 2-1. (Xinhua/Guo Chen)

Li Yang of China competes during the men's qualifcation round 1 match between Gao Peng/Li Yang of China and Maciej Rudol/Jakub Szalankiewicz of Poland at the 2019 FIVB Beach Volleyball World Tour, July 30, 2019. Maciej Rudol/Jakub Szalankiewicz won 2-1. (Xinhua/Guo Chen)

Gao Peng (L) of China competes during the men's qualifcation round 1 match between Gao Peng/Li Yang of China and Maciej Rudol/Jakub Szalankiewicz of Poland at the 2019 FIVB Beach Volleyball World Tour, July 30, 2019. Maciej Rudol/Jakub Szalankiewicz won 2-1. (Xinhua/Guo Chen)

Jakub Szalankiewicz (L) of Poland competes during the men's qualifcation round 1 match between Gao Peng/Li Yang of China and Maciej Rudol/Jakub Szalankiewicz of Poland at the 2019 FIVB Beach Volleyball World Tour, July 30, 2019. Maciej Rudol/Jakub Szalankiewicz won 2-1. (Xinhua/Guo Chen)

Maciej Rudol of Poland competes during the men's qualifcation round 1 match between Gao Peng/Li Yang of China and Maciej Rudol/Jakub Szalankiewicz of Poland at the 2019 FIVB Beach Volleyball World Tour, July 30, 2019. Maciej Rudol/Jakub Szalankiewicz won 2-1. (Xinhua/Guo Chen)

Li Yang of China competes during the men's qualifcation round 1 match between Gao Peng/Li Yang of China and Maciej Rudol/Jakub Szalankiewicz of Poland at the 2019 FIVB Beach Volleyball World Tour, July 30, 2019. Maciej Rudol/Jakub Szalankiewicz won 2-1. (Xinhua/Guo Chen)

Li Yang of China competes during the men's qualifcation round 1 match between Gao Peng/Li Yang of China and Maciej Rudol/Jakub Szalankiewicz of Poland at the 2019 FIVB Beach Volleyball World Tour, July 30, 2019. Maciej Rudol/Jakub Szalankiewicz won 2-1. (Xinhua/Guo Chen)

Gao Peng (L) of China competes during the men's qualifcation round 1 match between Gao Peng/Li Yang of China and Maciej Rudol/Jakub Szalankiewicz of Poland at the 2019 FIVB Beach Volleyball World Tour, July 30, 2019. Maciej Rudol/Jakub Szalankiewicz won 2-1. (Xinhua/Guo Chen)

Gao Peng of China competes during the men's qualifcation round 1 match between Gao Peng/Li Yang of China and Maciej Rudol/Jakub Szalankiewicz of Poland at the 2019 FIVB Beach Volleyball World Tour, July 30, 2019. Maciej Rudol/Jakub Szalankiewicz won 2-1. (Xinhua/Guo Chen)

Li Yang of China competes during the men's qualifcation round 1 match between Gao Peng/Li Yang of China and Maciej Rudol/Jakub Szalankiewicz of Poland at the 2019 FIVB Beach Volleyball World Tour, July 30, 2019. Maciej Rudol/Jakub Szalankiewicz won 2-1. (Xinhua/Guo Chen)

Gao Peng (L) of China competes during the men's qualifcation round 1 match between Gao Peng/Li Yang of China and Maciej Rudol/Jakub Szalankiewicz of Poland at the 2019 FIVB Beach Volleyball World Tour, July 30, 2019. Maciej Rudol/Jakub Szalankiewicz won 2-1. (Xinhua/Guo Chen)