@zengjiajun_eth Don't think optimizing the contract would help. Regardless of contract details, tx fee goes up until list price + tx fee = market price. If gas usage per purchase decreased 2x, the equilibrium gas price would have just been >12000 gwei instead of 6000.
@曾家俊不认为优化合同会有所帮助。无论合同细节如何，发送费用都会上涨，直到标价+发送费用=市场价格。如果每次购买的天然气使用量减少2倍，则平衡天然气价格将为>；12000 gwei而不是6000 gwei。