Around October 2019, I speculated that there was a chance for medium length videos, and then I went to Bilibili. When I stopped updating in June 2022, I judged it to be a peak in the PR advertising industry, and then I went to speculate on NFTs and cryptocurrencies. This was a peak period on the blockchain, but unfortunately, all of my big money was earned at the second level of the exchange. I didn't calculate the first level carefully, so I probably didn't make much. In April of the year 25, I believe that within the next 2 years, self media with script as its core will be completely replaced by AI. Within 5 years, all brands will directly use AI to create unofficial accounts, matrix embedding points, and PR advertising will completely end. Only a small part of PR advertising will remain in the world, and more than 90% of advertising will be CPC and CPM effect advertising. The content industry will only have reality shows left. The future is the era of universal subsistence allowance, where most people are eliminated because there is no longer a need for so many positions, and online will be fully automated. This is an opportunity for the AI application layer.