Overnight, LME copper opened at $9,454.5/mt.

Overnight, the most-traded SHFE aluminum 2411 contract opened at 19,785 yuan/mt, reaching a high of 19,875 yuan/mt and a low of 19,780 yuan/mt, closing at 19,830 yuan/mt, down 5 yuan/mt, a decrease of 0.05%.

Overnight, LME lead opened at $2,048.5/mt.

Metals market: As of midday close, base metals fell across the board. Shanghai tin fell 2.08%, Shanghai nickel fell 1.59%, Shanghai copper, Shanghai zinc, Shanghai aluminum and Shanghai lead fell within 1%. The main alumina futures fell 1.1%. The main industrial silicon contract fell 0.11%. The main lithium carbonate futures contract rose 0.3%. The black system is mostly green, the iron ore is flat at 949 yuan / ton, the thread rises slightly, and the hot coil and stainless steel fall slightly. In terms of double coke, coking coal and coke both fell within 0.6%. In terms of external metals, as of 11:39, LME metals fell across the board. London zinc fell 1.59%, London tin fell 1.04%, London aluminum, London nickel, London lead and London copper fell within 0.8%. In terms of precious metals, as of 11:39, COMEX gold fell 0.28% and COMEX silver fell 0.75%. In terms of domestic precious metals, as of the close at noon, Shanghai gold fell 0.25%, and Shanghai silver fell 1.07%. In addition, as of noon closing, the main futures of European line container shipping were reported at 1791 points, up 2.98%.

On December 15, the People’s Bank of China conducted a 1.45 trillion yuan one-year MLF operation to hedge the 650 billion yuan one-year MLF due today, that is, a net liquidity injection of 800 billion yuan through MLF, which was the largest "net injection" in a single month on record.

People's Bank of China launched a 101 billion yuan 7-day reverse repurchase operation today, with a winning bid rate of 1.8%.