When Yuan Mingyue was interviewed, he said that he suddenly understood the Way of Heaven at the age of 26. What exactly is the Way of Heaven he mentioned?

There is a tree in the yard.
When I first moved into this house, it was only half a meter tall.
At that time, the property management asked me if I wanted to cut it down, but I refused in a moment of hesitation.
A few years later, it grew to two stories high and started blocking the sunlight for the upstairs neighbor.
Not long after, the neighbor approached me about whether they could cut down the tree, and I agreed.