It merely shows that Apollo samples differ from those collected in a completely different location.
Your own Apollogist expert, Korotev, says this:
"We have no reason to suspect, based on data obtained from orbit that any region of the moon is rich in types of rocks significantly different from those we that know about or postulate might exist. [...] It is highly unlikely that any yet-unfound lunar meteorite will differ substantially from the Apollo lunar rocks and known lunar meteorites in the minerals it contains or in its geochemical character."
ALSO: Chinese Regolith particle average weight is 1/4th that of the Apollo regolith. (5/8ths diameter--- cubed).
China and USA are interdependent for trade and economy. It shouldn't surprise you that China isn't dumb enough to do something that may have backlash to themselves.
Or if China does know this "dirt" - is it better to "leverage your dirt?" (get something from it) - or to expose it, lose your leverage and cause damage likely to cut both ways?? NASA wants you to believe as you do -- so keep on believing.