As for the concept of "chain", I think that the general L1/L2 will become less and less in the future and tend to focus on the head, because blockchain and traditional Internet enterprises have essential differences. The longer a public chain runs, the more mature its infrastructure, the higher its core value, and the birth of challengers will become unnecessary. Just like we don't need to develop another Bitcoin at all. But there will be more and more specific types of chains such as application chains and privacy chains. Many people do not distinguish between the concepts of the underlying and ecological layers. As a universal underlying blockchain, technological neutrality is the top priority. It should meet all needs as much as possible and achieve balance in the impossible triangle, rather than getting too involved in ecological development and maintaining maximum openness for builders. Protocol and application-oriented chains belong to the ecological layer, which is led by teams, focusing on developing a certain direction and marketing their own products. The market is obsessed with delving into the bottom layer, wanting to revolutionize the lives of Ethereum and Solana. The reason behind this is that these stories are easy to tell and understand, have high value for the underlying assets, and can obtain high financing and valuation, but their practical significance is very low. Indirectly caused a vacuum in the current ecological layer.