An independent stock commentator, he has served as the head of the research department, financial institution strategist, responsible officer and executive director of Doo Financial HK, and has also been a senior management member of a listed company. He has many years of experience in market commentary and analysis. He holds an honors bachelor's degree in business administration (Department of Applied Economics), a master's degree in finance (investment management) and a chartered financial strategist (CFC) qualification. He is the founder of the Five Elements Futures Index.

"Guo Sizhi Studio" has more than 6,000 followers. He often analyzes financial information and stock market trends in major media, newspapers, and financial websites. He has been engaged in the securities industry for more than 40 years.

He studied economics in college and completed a finance course at Heriot-Watt University in the UK. He has accumulated many years of practical experience in market investment and has in-depth research and unique insights into the stock market. Currently, he is a licensed trader representative of the Hong Kong Securities and Futures Commission - person in charge of securities and futures companies (RO1&2), and a Continuing Training Seminar (CPT) instructor in the industry. He has taught various investment courses, brokerage practice classes, order placement system applications, securities company business operations, and co-organized options lectures with the Hong Kong Stock Exchange, etc.