I heard in Momo that M theory is profound, so what is M theory? Find a solution

A series of conclusions obtained by the combination of string theory and supersymmetry are M theory.

There are four basic interactions in nature: gravity, electromagnetic force, strong interaction and weak interaction. Among them, gravity is described by general relativity, and the other three forces can be unified by quantum field theory (GUT theory), but quantum field theory cannot describe the gravitational field consistently, so some theoretical physicists have made some modifications and expressed the geometric points by one-dimensional strings, thus describing the gravitational field consistently, that is, string theory (of course, it is not necessary to use one-dimensional, but it can also be used).

However, the calculation of string theory is very complicated, and the current research is basically perturbation string. In order to conform to reality at high energy, supersymmetry, that is, the symmetry of Bose and Fermi, that is, M theory, must be introduced. M theory is the most promising theory of quantum gravity at present, but some conclusions sound unreliable. Supersymmetry is one of them, and additional dimensions should be introduced.

I heard that CERN will have a project to find supersymmetric particles next year, but I don't know what the result will be. If found, it will definitely be the most sensational in physics.