Forking is a means of upgrading the blockchain. When upgrading, it seems that the blockchain has come to a fork in the road. If you go to the left, you don’t have to do anything, and if you decide to go in another direction, you will Download new software, run a new node, the node will go to the right, and finally this will lead to two different roads, and there will be a completely different scenery. This is everyone's choice and everyone's freedom