Most of it is related to investigation types, and Chen Fei naturally merged these three martial arts techniques. However, after merging the techniques, Chen Fei rarely uses them.
It's not that the fusion of techniques failed, but rather, the merged technique consumes too much mental power, and even with Chen Fei's mental strength, he cannot sustain it for a long time.
It's as if a quantitative change has led to a qualitative change. These three martial arts techniques are almost specialized in their respective areas, each excelling in its own way. Therefore, there is no need for complementing weaknesses in this merged technique among these three.
They have simply merged to become a stronger entity.
