本文提出一个统一性假说:万物究其本源,皆是能量。在重新审视质能等价(E=mc^2)与能量守恒定律的基础上,本文论证了能量是比质量更基本的物理存在。通过将能量定义为贯穿一切物理过程的“终极实质等价物”(Universal Substantial Equivalent),本文为宇宙中一切可观测与不可观测的物质形态——包括普通物质、暗物质乃至暗能量——提供了一个统一的底层描述框架。本文的核心贡献不在于“能量”这个名词本身,而在于确立了一个超越现有物理学学科壁垒的、最底层的“单位”概念。该假说为进一步探讨引力的本质、黑洞奇点的化解以及量子引力理论,提供了全新的视角。 On the Unity of "All Things Are Energy": Energy as the Ultimate Equivalent Across All Physical Domains Keywords: All things are energy; mass-energy equivalence; universal equivalent; unity; dark energy Extended Abstract (English) This paper proposes a unifying hypothesis: all things, at their most fundamental level, are energy. Re-examining the principles of mass-energy equivalence (E=mc^2) and the law of energy conservation, this paper argues that energy is a more fundamental physical existence than mass. By defining energy as the "Universal Substantial Equivalent" that permeates all physical processes, this paper provides a unified underlying descriptive framework for all observable and unobservable forms of matter in the universe—including ordinary matter, dark matter, and even dark energy. The core contribution of this paper lies not in the term "energy" itself, but in establishing a foundational "unit" concept that transcends existing disciplinary barriers in physics. This hypothesis offers a new perspective for further exploring the nature of gravity, the resolution of black hole singularities, and quantum gravity theory.