I updated a convergence diagram and a three-cycle secondary system sharing. Friends can collect it. This is still of great practical significance.

For the examples given in it, I suggest only using the triangle convergence diagram. It is not that other things cannot be used, but the triangle is the best and easiest to identify.

My content is shared publicly and for free, and I personally do not do any paid business.

There is no such thing as half of it being posted, and the other half needs to be viewed in other places or paid.

The update frequency will be slightly reduced in the next few days. The voting thing in the past few days has made me a little upset. I need to think about the cause of this phenomenon and iterate the content.

My number of fans is not low, why am I ranked around 30? I really don’t understand.

Is the problem that I didn’t charge money? Is it that the free sharing is not cherished?

I need to think about it carefully🤕