1, the relationship between stock index and CSI 300 belongs to the relationship between futures and spot. The stock index is the futures contract of Shanghai and Shenzhen 300, and the subject matter of the stock index is the Shanghai and Shenzhen 300 Index. The two trends are the same, but there is a gap. This difference is the basic difference. The reason for this is that stock indexes can be bought and sold, and are affected by "supply and demand" and funds. The CSI 300 is calculated by weighting the circulation of 300 stocks.

The two influence each other.

2. Active liquidation belongs to hedging, and you can choose the price you think is suitable for liquidation. Forced liquidation belongs to the final "delivery". The price is not your choice. It is the average transaction price of the last two hours as the final delivery price.

Which is cost-effective? This is hard to say. The trend of the last two hours is uncertain, and we won't know which one is cost-effective until we stop trading.

Hand-typing. Hope to adopt.