The largest block option for ETH today is: a certain boss paid $640000 to buy a call option of 2300 at the end of April and sell a call option of 2200 on March 14th (next Friday), totaling 7500 ETH on one side The boss believes that the short-term upward potential of ETH is limited, but there is greater upside potential in April. Therefore, by selling short-term call options to reduce the cost of long-term call options, it is equivalent to low-cost layout for subsequent upward trends 📈。