eng Science and Education Publishing International Journal of Physics 2333-4576 2017-02-17 5 1 16 20 10.12691/ijp-5-1-3 IJP2017513 article Wei Xu wxu@virtumanity.com 1 1760 Sunrise Valley Dr. Suite 403, Reston, Virginia 20191, USA Evolution from the classical dynamics W=P to the spacetime interwoven W=P+iV of modern physics, this paper demonstrates the yinyang physics of nature law: Universal Topology W=PiV, that intuitively constitutes YinYang Manifolds and Dual Event Operations. Following the yinyang principle, its First Horizon naturally comes out with the YinYang Energy-State Equilibrium and YinYang Motion Dynamics, which replace the empirical 'math law' and give rise to the general quantum fields to concisely include Schrödinger and Klein�CGordon Equations. As a result, this becomes a groundwork in the quest for Unified Physics: the workings of a life streaming of yinyang dynamics ... http://pubs.sciepub.com/ijp/5/1/3/ijp-5-1-3.pdf unified field theories and models spacetime topology quantum fields in curved spacetime quantum mechanics theory of quantized fields field theory