The Buddha never argued that the physical world does not exist, even if he acknowledged that all material constructs that come together are changeable and impermanent.
Of course, if the Buddhist experience of ‘empty space’ is purely subjective, then how can it be ascertained that such an experience is ‘real’ as opposed to ‘imagined’?
Within the received chain of dependent origination (paticca-samuppāda), the Buddha uses the term ‘namo-rupa’ or ‘mind-body’ – to explain that these two otherwise distinctive entities are inherently ‘linked’ or ‘entwined’ at source, and within his schematic of interpreting reality, cannot be considered ‘separate’ in any manner.
This type of power emits the bodyweight anywhere and at anytime through an advanced understanding of the body-mind nexus. It is a higher form of physics that transcends the usual localised muscular tension and superficial joint leverage utilised by many other fighting systems.