Today, the most-traded BC copper 2507 contract opened at 69,530 yuan/mt and closed with a bearish candlestick, showing an increase in bears' open interest. During the night session, the most-traded BC copper contract fluctuated downward initially, touching a low of 69,320 yuan/mt. During the day session, international copper prices opened higher, reaching a peak of 69,680 yuan/mt. In the afternoon, the center of copper prices continued to move downward, touching a low of 69,120 yuan/mt, and finally closed at 69,170 yuan/mt, down 560 yuan/mt, representing a decline of 0.79%. The open interest was 2,678 lots, a decrease of 499 lots from the previous trading day, and the trading volume was 1,220 lots.