I just went through NKIs Chun wiki.
Following comment got my attention :
If you are stuck in the corner, you can do jump back Spinning Bird Kick over fireballs to build meter. Be careful though, because if he see’s this coming, he can deley his fireball and make you land on it."
Huh?! You only wanna use this in the corner?
Nobody bothered to do a straight up jump air SBK mid screen?!
I know the execution is very tricky (you could make a mistake and do jump forward air SBK, land right in front of opponent), but in the old days I used to do this a lot.
Huge meter gain, plus you can still attach Lightning legs when you land, eg after slow fireballs, for additional meter until the next fireball comes.
Great taktic against people who want to stay full distance, shoot you dead and where you turn the tables once you get full meter first.