These eight tips do contain a wealth of wisdom for coin masters and investors, helping to avoid common traps in market fluctuations and improve the winning rate of investment. Each sentence refines the core concept of survival and profit in the coin market:

1. When you are stuck in a position, you should not think about turning losses into profits quickly, but should focus on preserving the principal and moving forward steadily. This is in line with the conservative strategy and avoid greed leading to greater losses.

2. When there is a high wave on the calm water, beware of the big waves behind: when the market seems stable, there is a hidden crisis. Investors should always be vigilant and guard against sudden and large fluctuations. This reflects a keen perception of market risks.

3. After a big rise, there must be a correction, and the K-line draws a triangle for many days: after a rapid rise, there will often be a correction. Paying attention to the shape formed by the K-line, especially the consolidation of the triangle, is an important part of technical analysis to help judge the next market.

4. Buy Yin instead of Yang, sell Yang instead of Yin, and move against the market, and you will be a hero: this emphasizes the wisdom of reverse operation. Buy when it falls, sell when it rises, avoid following the trend, and effectively avoid emotional trading.

5. Don't sell when it goes up, don't buy when it goes down, and don't trade when it goes sideways: It is very important to wait for the best time to buy and sell. Don't rush to sell when it goes up, don't rush to buy when it goes down, and wait and see when it goes sideways, which will help reduce wrong decisions.

6. Look at the support level in the upward trend and the resistance level in the downward trend: In the trend market, pay attention to the key support and resistance levels to help find the best entry and exit points in different market environments.

7. Full position operation is a taboo, and it is not advisable to act alone. You must know when to stop when it changes. Enter and exit freely and observe the opportunity: Full position and overconfidence are taboos in investment. The market is unpredictable. Flexible response and timely withdrawal are the strategies of masters to ensure the flexibility and adaptability of funds.

8. The mentality of currency speculation is played, and greed and fear are the big harm: Finally, the importance of mentality is emphasized. Greed and fear often lead to chasing ups and downs. You must stay calm and respond rationally to market fluctuations.

In summary, these eight tips are not only a collection of investment skills, but also a profound understanding of mentality management and risk control. A true master will remain calm, not be influenced by market sentiment, and move steadily towards success.