During the holiday period, Lun Aluminum fell, and Shanghai Aluminum is expected to have a downside risk today. Recently, the price of aluminum is weak. From the perspective of the industry, there is not much more than expected in the recent industrial chain of aluminum. The domestic macro-level is in a short-term vacuum period. Therefore, the main reason for the recent trend is the overall market sentiment. China's December manufacturing PMI, which was released yesterday, fell below the glory line for the first time in July 2016, indicating that the downward pressure on China's manufacturing industry has increased, and domestic industrial products continue to be suppressed. Recently, the volatility of US stocks has increased, and market risk sentiment is uncertain.