The most obvious prerequisite for this trick. To be perfectly honest it doesn’t need to be Pop too because I personally struggle with pop kicks and could still learn Cart Full Feilong. If you can only do Cheat Feilong, then that’s fine too. Just make sure you are comfortable with the Feilong motion (outside crescent to inside crescent or roundkick). You can also substitute the outside crescent with a snapping front kick.