Kali progression:
double stix
single stick
knife
empty hand
Wing Chun progression:
dan chi
bon lop
bridge drill
roll
dan chi in roll
sticky sombrada:
whereas hubud can be done with stick, knife and hand, sombrada can only be done with stick and knife in Kali
so in Jun Fan we have the kali sombrada concept done with WC traps, as well as a mantis move to make an empty hand counter for counter drill
HIA:
the JF sequence
this of course uses the bridge reference and the first technique Lop Sao is B1a in Kempo