During the author's graduate studies in electromagnetic waves at Xidian University (China) in 1987, He published the electromagnetic field mutual energy theorem. Later, the author worked in medical imaging in Germany, Canada, and the United States. 30 years later, the author discovered this theorem, not only the energy theorem, but also the law of conservation of energy. And further discovered the law of mutual energy flow. And it was found that the mutual energy flow has the shape of photon, with sharp particles at both ends and coarse waves in the middle. Strangely, Maxwell's equation cannot prove this law of energy conservation!

As a result, the author discovered a loophole in Maxwell's electromagnetic theory. The author fills the gap in Maxwell's electromagnetic theory by proposing a new electromagnetic axiom that radiation does not overflow into the universe. Thus, a classical electromagnetic theory that can include photons was established. Successfully solved wave particle duality problems such as wave collapse.