16 Entrepreneurs used letters as a special way to convey the beliefs they have always adhered to. From the letter, you can read Liu Chuanzhi's art of management handover, Ren Zhengfei's corporate self-renewal skills, Ning Gaoning's sense of corporate social responsibility, Ma Huateng's crisis transformation methods... 21 Financial opinion leaders including Zhang Xiaoping, Su Xiaohe, Shi Yonggang, etc. Conducted an in-depth interpretation of the letter and unearthed the truest emotions of the entrepreneurs in it.