1. ups and downs stop+fuse, similar to ligation+condom, the former is meaningless;

2. Tracking CSI 300 is not feasible, and it is easy to be manipulated and misled. Manipulating ETF is equivalent to manipulating the Shanghai and Shenzhen 300 Index, which is equivalent to manipulating about 3,000 China stock markets.

3. Melting off, restricting liquidity or even suspending trading is worse than the price limit, and the weak market is easy to become a run.

The ups and downs of the daily limit are not limited to transactions. When the fuse mechanism is triggered, all transactions are directly stopped (closed). For capital predators, this is a once-in-a-lifetime opportunity to induce sheep in the stock market to run and trample on each other at low cost and low risk in a weak market. It can be replaced by a strong market bullish approach, but the power of rushing to sell is always far greater than rushing to buy, and rushing to sell is to flee for life (promoting decline).

The upward approach is more difficult, not easy to rise, and promotes the decline. It can be considered that the upper melting point is a little more than the lower melting point.

Capital is characterized by the need for mobility. Once people find the risk, they may not be able to sell shares for cash. The next day, the third day, and the n day, the sheep rushed to escape and fell on the furnace every day. Buyers stay away from watching, sellers have no way to escape, and the consequences are unimaginable (this is exactly the same as the principle of daily limit).

4. The distance between the two fuse points is too close, and the selling orders accumulated after the first fuse point will be quickly pressed down, and the second point will be easily touched;