Oh, they do. They train with the CNT ahead of the majors all the time. They can participate in any of the leagues in China. They actually hired some provincial players to help with training ahead of this WTTC.
Hong Kong's head coach actually knew it was gonna be difficult in the singles ahead of time. The chances are higher on the doubles and mixed doubles. If it weren't for that draw...
http://paper.wenweipo.com/2019/04/11/SP1904110018.htm...
She's more concerned with the room temperature affecting the bounce of the table.
https://www.tabletennisdaily.com/forum/showthread.php?20811-World-Table-Tennis-Championships-2019&p=270245#post270245