In fact, IFC can also extend the block reward cycle. I estimate that it is a model based on the experimental fee. The block rewards are attracted to many people to dig, and the coins are scattered in the experimental fee model. As a result, the coin was dug up, and the founding team did not transfer the fee to this model, which caused the IFC to waste a few years, the owner lost and the heat dropped. Missed the golden age of development.