Is this an ongoing trial? When are the results due? 3x100 subjects (is that correctly read?) seems quite powerful.
According to the register, the study execution time should be "2020-01-31 To 2020-02-29"
But nobody seems to have any insight on the final results. But I would recommend this article with comments of the study leader (Dr Zhang Zhan). The article also explains how they initially discovered the efficiency of the drug by just noticing there were no lupus patients (who were under chronic treatment of hydroxichloroquine) infected with covid19.
https://www.jqknews.com/news/388543-The_novel_coronavirus_pn...
I assume that means it's either too small of a sample size or it doesn't make enough of an affect?