Just because it is "based on the topic" it does not make it factual. I have read the article 4/5 times now (each time you mention it I go back to see if I missed anything). It doesn't cite anything other than based on "evidence in China", evidence it doesn't provide.
I couldn't find the WSJ article. But, again, you think it is true "because it was full of mathematical equations". Send us the link so that I can read it.