Shanghai base metals were mostly higher on Tuesday morning as investors awaited remarks from US President-elect Joe Biden's nominee for Treasury secretary, Janet Yellen. Meanwhile, their counterparts on the LME also rose for the most part. Shanghai base metals mostly advanced in overnight trading. Copper added 0.41%, tin rose 0.61%, zinc went up 0.12% and nickel strengthened 0.61%, while aluminium slid 0.2% and lead fell 0.4%. The LME complex performed similarly on Monday. Copper advanced 0.14%, tin edged up 0.47%, lead climbed 0.2% and nickel increased 0.25%, while zinc and aluminium underperformed with 0.3% and 0.61% losses respectively. Biden will take office as the next president of the US on Wednesday, and Yellen, the nominee of the US Treasury Secretary, will attend the Senate hearing, which is expected to defend the $1.9 trillion economic stimulus plan. The market is optimistic about this. However, at present, the COVID-19 continues to spread, and the increase of COVID-19 cases around the world makes investors take a cautious position. Under risk aversion, the US dollar index hit a high of 90.95 at night, while copper futures dropped slightly at night. On the spot side, social inventories continues to decline, the price-holding merchants have a strong sentiment, and it is difficult to see the downward trend. It is expected that the premium will maintain the price-holding sentiment in the near term.