Your assumption that anything was conveyed to China of which they were not already aware demonstrates your gullibility and excessively agrandising self assessment.
I don't think you get it.
It is one think for China to know of something or to have strong suspicions about it.
It is an entirely other thing to receive outside independent confirmation of it, and to have that information published in the international press by a citizen of the foreign country you are hoping to embarrass.