The London Metal Exchange base metals rose across the board on Tuesday. Copper futures rose steadily in early trading. The opening price of floor trading increased afterwards. However, it subsequently fell under the pressure of a stronger US dollar. The trading volume at the venue was reported at 3238 US dollars, up by 40 US dollars. For 86128; aluminum followed the copper up, but the margin was modest, and some of the gains were also withdrawn late in the session. The floor traded in the final report at $1994, up by $22, with a volume of 198869, which was the most active day of recent transactions. The U.S. dollar remained weak at the beginning of the day, but then the U.S. Treasury Department released a report showing that the foreign capital inflows into the U.S. in January unexpectedly reached US$ 91.5 billion, the second record high enough to make up for the U.S. current account deficit in the month. Afterwards, the U.S. dollar has risen, and the reversal of the U.S. dollar against the euro has become more apparent, but it has not been significant. Judging from the recent trend of the US dollar, the long-term trend is still falling, and the short-term rebound has not been able to reverse the trend of futures prices. It is expected that the US dollar will continue to weaken further. Yesterday's metal market's late gains were directly caused by the rise in the US dollar. As long as the US dollar weakened once again, the metal market will climb again and the copper futures aluminum futures could reach a new high. With the decline of copper inventories, the market has been significantly insensitive to changes in inventory data, but the Shanghai copper spot market performed better than the previous spot, the spot price in recent days have maintained the premium pattern, and yesterday's 503 contract performance than the next trading day Eye-catching, the month-to-month spreads that have been narrowed earlier have been expanded, which shows that the monthly spread of Shanghai Copper still has the potential to expand again. The 503 contract will be delivered shortly. If the spot market does not receive any shock after the delivery, the previous one or two months of import will be significantly reduced because of the large loss of the former copper imports, and the spot will gradually become stronger due to the decrease in supply. Yesterday, LME copper rose and failed to fall below the 3200 integer barrier. The price has been oscillating above the previous high of 3177 in recent weeks. It is clear that both the rising and falling momentum are not strong enough. Copper is expected to maintain its uptrend and upward trend. The decline may be very small; aluminum futures rose yesterday, the previous high point of support to take effect, and the cumulative increase in short-term energy to be released before the release of a certain period, aluminum is likely to continue to rise to a new high. Shanghai Copper and Shanghai Aluminum are still in bullish trend. However, due to the increase in Shanghai Copper's high risk, Shanghai Aluminum still has room to rise and can hold long positions.