In my eyes, there are probably two paths to the so-called 'deep good writing, learned!': People who have been focusing on a certain field or even a certain project for a long time also conform to Buffett's principle of "always focusing on the field where you are an expert". People in the industry who have asymmetric information and can/dare to disclose it publicly The rest, summarized through public information, draws conclusions, and outputs, are nothing but records of self-learning and growth.