if you hear tuishou or push hands, its taichi.
tuishou doesnt use strength from the hand, it utilises its
strength from the kua from the hip. it is said to be a spring
that can generate alot of strength from there. if you played
tennis, you know what I am talking about.
if you use strength from the hand in tuishou, the other guy just
dodges and gently returning the strength back to you without a need
to even use any strength. anyway the strength generated from the
hand isnt much anyway.