My father planted a pine tree in front of my grandfather's grave, and now it has grown into a big tree. Besides, my father was as drunk as a fiddler. I wonder if there is a connection between the two.

There are many things in Feng Shui that cannot be explained scientifically, but some can be found. For example, if your father thinks that this pine tree is improperly planted, it may hinder himself and his family, then this is a psychological suggestion. He will blame the pine tree for some inexplicable things, such as he wants to give up drinking but can't.

So if you want to help, first take your father to the hospital for a check-up to see if there is anything wrong with your health. If physical reasons are excluded, it is likely to be psychological reasons, which will be well solved. Generally speaking, cypress trees will be planted in cemeteries. I suggest you find someone, pick an auspicious day, call your father, buy a sacrifice, and take down the pine tree and have a try.