太虛拳与太极拳同源异流，其理均一，唯太虚主先天(未知)，太极(多极)主后天（已知），太虚即无极，阴阳未分，浑然鼓荡，一气于其间。Taixu Quan and Taijiquan are homologous but different streams. Taixu is primarily before the existence (unkown or before known)whilst Taiji is in existence (already known). Taixu is endless, boundless or unlimited when Yin and Yang are not even in existence.
