“I found that many articles and interviews are about how to get into big companies, but actually surviving in big companies is also a skill” Preface The author recently changed jobs, chose to follow his heart, and did not continue to work in the previous company. Taking advantage of the recent resignation, I quickly calmed down and output my previous experience. Although I only stayed in the previous company for almost a year (the previous company referred to in this article is a certain company), I still learned some of the working methods and processes of big companies.