According to Wu Shuo, tomorrow is the quarterly delivery, with $15 billion awaiting delivery, and market participants are stepping up their positions. BTC call options are still the absolute main force in moving positions. Among the large transactions today, slippages of 6-8 Bp were the main ones, and slippages of more than a dozen Bp were not uncommon. Due to the recent high market volatility, the main period IV has not declined significantly, making the current cost-effectiveness of selling options continue to increase. Even in June and September, there are good selling trading opportunities.