Why are Chen and Ito Meiteng in the same group in the first round of W Grand Slam table tennis?

The lottery is fair, and there is no backstage trading.

For Mikei Ito, Manyu Wang and Sun Yingsha, two great table tennis players, were perfectly avoided this time, but there is still a mountain to avoid. Enemies Wang Yidi and Chen Xingtong will meet them at any time. Last year1October 28th World Table Tennis Championships11/quarter finals, Wang Yidi played against Mikei Ito. As a result, she won easily at 4:/kloc-0, leaving the complacent Japanese team with nothing.