These 2 systems belongs to different approach. One base 0n the 24 jieqi and the other based on xien/ hou tian bagua.
If you forcefully combine them or choose the best out of these 2 systems, you can locate / direct important area at Hai/Xu( NW), Geng(W), Wei(SW) and Yin(NE).
BUt how effective it is .... you let me know, ok