Yang dive kick kick chain?

Classic Fighting Games Street Fighter III: 3rd Strike
#1

I’ve see in a lot of yang roshihikari matches,
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at around 20 seconds in the match he uses (what i think) a medium kick in the air followed with a dive kick? how do you do that i’ve been trying to do mk -> dive kick but i can’t make it work.

#2

While in the air do mk-> mk dive kick. You’ve gotta wait for a sec after jumping tho to do it