1. Suppression-type wash means that after the main force completes the position building, a large number of profitable orders have accumulated in the market. At this time, the main force needs to get these profitable investors out, so it starts to suppress the B price, causing the B price to fall sharply, causing market panic and forcing investors to sell their chips. Suppression-type wash usually takes a short time, but the decline is large and the method is fierce.

2. Pattern wash, this wash method is that the B price fluctuates repeatedly within a certain range, and investors are washed out over time. The main force takes advantage of the lack of patience of retail investors and slowly consumes investors' confidence over time, forcing them to sell their chips. The main difference between pattern washing and shipping is the change in trading volume. During the washing, the trading volume is shrinking.

3. Shock washing, the main force uses a combination of pulling up, grinding and suppressing to wash the market. This washing method will make investors confused about the direction of the main force, thus forcing retail investors to leave the market. The shock washing method can avoid the main force's loss of low-priced chips and shorten the washing time.

4. Wash the market while rising. This is a washing technique used when the B price is rising. The main force is washing the market at the same time during the pull-up process. No trace of the market washing can be seen on the daily K-line, which is mainly reflected in the time-sharing chart.