Yang dive kick kick chain?

I’ve see in a lot of yang roshihikari matches,

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.

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