The new ranking system has not hurt China. They have six top 10 players on the women's side and five top 10 players on the men's side with Wang Chuqin sure to join that list in the not too distant future. You do have to be patient though.
I'm not so sure.
It took their men's team almost 1.5 years to recover the top-10 to the pre-2018 level. The women's team is actually still 1 spot away from the pre-2018 level for top 10. Both have trouble keeping up with the top-20 and top-100.
Some folks predicted there would be more CNT players in the Top 10, but
I thought otherwise the day the reform took effect.
Half a year later, here is the breakdown of the World Ranking for the CNT in the Top 10, 20, and 100:
Men's
Dec, 2017 5/10, 8/20, 13/100
Jan, 2018 4/10, 4/20, 8/100
Jul, 2018 4/10, 4/20, 9/100
Women's
Dec, 2017 7/10, 9/20, 25/100
Jan, 2018 4/10, 5/20, 9/100
July, 2018 5/10, 7/20, 13/100
While the Men's took less of a hit than the Women's, the number doesn't show much if any recovery. Even though the ITTF have loosened up on the number of entry for each association, the "no separation of association" rule and separate ranking list for U15, U18, U21 and senior players are really working against them here.
...
Men's
Dec, 2018 3/10, 4/20, 11/100
Jan, 2019 3/10, 5/20, 10/100
Feb, 2019 3/10, 5/20, 11/100
Mar, 2019 3/10, 5/20, 11/100
Apr, 2019 4/10, 5/20, 11/100
May, 2019 5/10, 5/20, 11/100
Jun, 2019 5/10, 5/20, 10/100
Jul, 2019 5/10, 5/20, 11/100
Aug, 2019 5/10, 5/20, 9/100
Women's
Dec, 2018 5/10, 6/20, 14/100
Jan, 2019 5/10, 7/20, 14/100
Feb, 2019 5/10, 7/20, 15/100
Mar, 2019 5/10, 7/20, 16/100
Apr, 2019 5/10, 7/20, 12/100
May, 2019 5/10, 8/20, 14/100
Jun, 2019 5/10, 7/20, 12/100
Jul, 2019 5/10, 7/20, 13/100
Aug, 2019 6/10, 7/20, 13/100