Principle of bottom fishing: 1. The price range chart is arranged in an olive shape, with the maximum increase of about 3% and the maximum decrease of only about 3%. The vast majority of market varieties are in a state of slight rise and fall; 2. Don't make money, don't add positions! 3. Start with big and then small, have a precise prediction of the overall trend and industry, have clear thinking, and act decisively. 4. The position of buying at the bottom shall not exceed one-third, and shall be bought in three installments. The key to bottom fishing is as follows: 1. Short term bottom trick: a three-day sharp decline followed by a rebound; 2. Mid line bottom tip: Land quantity and price can rebound; 3. Long term bottom trick: After years of deep decline, love is at the bottom. Five key points for copying: 1. Do not use all the funds in your hand at once, buy in batches. 2. Don't buy too many stocks, at most three are enough, concentrate ammunition on strong stocks. 3. The stocks you buy should have a front and bottom, but there are currently no stocks that have followed the market to a new low, so you cannot simply buy more and more as they fall. 4. Small and medium-sized stocks are the preferred choice, with a projected increase in semi annual performance and a two-year lock up commitment for major non major stocks. Various themed stocks can be given special attention. 5. When the upward trend of the market has not yet formed, the stocks purchased should try to do some zero or high sell low buy operations as much as possible to reduce holding costs.