First of all, your name is wrong. Beat is not a mathematical fraction, so it can't be called the name of the component number, nor can it be written in the form of a fraction.

So this beat should be called "four-one beat" or "one-four beat". China has a chaotic name and has a unique name abroad.

I understand what you want to say is the beat of "one beat of the quarter note, one beat of each bar"?

Since there is only one beat in each bar, this beat in each bar is a strong beat, and there is no weak beat in each bar. It's as simple as that (the "law of dynamics" you asked is a short description based on the beat).

For example, in the case of four beats (one beat for the quarter note and two beats for each bar), the first beat of each bar is a strong beat and the second beat is a weak beat, so the strength relationship of each bar is "strength". Four or three beats is "weak".

If you have any questions, please ask them and I will make sure you understand them. :)