All startups need to rely on a certain ecosystem to survive, such as TikTok bloggers rely on the TikTok ecosystem. Whether this ecosystem is developing or disappearing actually fundamentally determines the life and death of startups. The core point of startups is to see the changes in various ecosystems and make their own choices. How to judge the rise of new ecosystems, how to rely on the ecosystem to find their own survival model and achieve lightning expansion are the key contents of this class.