Ask for advice, how did this solar beam come out?

The light beam you mentioned has a term called Tindal light beam, which is generally easy to see through the gap of leaves, or the clouds in the sky are thick, and there may be such a light beam in the gap. There is another place where it is easiest to see such a light beam. For example, on a sunny day, like that window, it is easier to see such a light if there is dust flying indoors.

It's not difficult to shoot, mainly because of the angle. You have to try it yourself. Of course, the aperture can be appropriately reduced and the exposure should be accurate.