Mayu Ishikawa (L) of Japan spikes the ball during the Round Robin match between Japan and South Korea at the 2019 FIVB Women's World Cup in Yokohama, Japan, Sept. 16, 2019. (Xinhua/Zhu Wei)

Mayu Ishikawa (L) of Japan spikes the ball during the Round Robin match between Japan and South Korea at the 2019 FIVB Women's World Cup in Yokohama, Japan, Sept. 16, 2019. (Xinhua/Zhu Wei)

Yuki Ishii (L) of Japan spikes the ball during the Round Robin match between Japan and South Korea at the 2019 FIVB Women's World Cup in Yokohama, Japan, Sept. 16, 2019. (Xinhua/Zhu Wei)

Risa Shinnabe (1st L) of Japan spikes the ball during the Round Robin match between Japan and South Korea at the 2019 FIVB Women's World Cup in Yokohama, Japan, Sept. 16, 2019. (Xinhua/Zhu Wei)

Lee Jaeyeong (C) of South Korea spikes the ball during the Round Robin match between Japan and South Korea at the 2019 FIVB Women's World Cup in Yokohama, Japan, Sept. 16, 2019. (Xinhua/Zhu Wei)

Players of South Korea celebrate after winning the Round Robin match between Japan and South Korea at the 2019 FIVB Women's World Cup in Yokohama, Japan, Sept. 16, 2019. (Xinhua/Zhu Wei)

Kim Yeon Koung of South Korea serves during the Round Robin match between Japan and South Korea at the 2019 FIVB Women's World Cup in Yokohama, Japan, Sept. 16, 2019. (Xinhua/Zhu Wei)

Kim Yeon Koung (L) of South Korea spikes the ball during the Round Robin match between Japan and South Korea at the 2019 FIVB Women's World Cup in Yokohama, Japan, Sept. 16, 2019. (Xinhua/Zhu Wei)

Players of South Korea celebrate during the Round Robin match between Japan and South Korea at the 2019 FIVB Women's World Cup in Yokohama, Japan, Sept. 16, 2019. (Xinhua/Zhu Wei)

Kim Yeon Koung of South Korea competes during the Round Robin match between Japan and South Korea at the 2019 FIVB Women's World Cup in Yokohama, Japan, Sept. 16, 2019. (Xinhua/Zhu Wei)