Group 1 - The article discusses the tradition of investing before the Spring Festival, highlighting a successful investment in 2008 related to the Olympics and airlines, which yielded significant returns [1] - It mentions that out of 20 years of stock market performance, 16 years showed positive results in the week leading up to the Spring Festival, indicating a historical trend [1] - A contrasting example is provided with a colleague's unsuccessful investment in cotton futures before the 2020 Spring Festival, which resulted in significant losses due to market misjudgment [1] Group 2 - The author reflects on the evolution of investment strategies, noting that initial successes were largely due to luck rather than skill, emphasizing the importance of understanding market dynamics [2] - The article warns against the dangers of assuming that past successes are guaranteed to repeat, highlighting the risks of subjective judgment in investment decisions [2] - The current approach is to adopt a more cautious and observant stance in the market, focusing on understanding the reasons behind profits and losses rather than chasing quick gains [2]