上期所基本金属期货夜盘收盘全线下跌，氧化铝跌1.57%

Group 1 - The core viewpoint of the article indicates that the futures market for base metals on the Shanghai Futures Exchange experienced a decline across all categories during the night session on August 14 [1][2] Group 2 - Specific declines in metal prices include: alumina down by 1.57%, lead down by 0.89%, aluminum down by 0.67%, zinc down by 0.57%, nickel down by 0.56%, stainless steel down by 0.53%, tin down by 0.50%, and copper down by 0.29% [1]