At the close of the morning session, the main domestic futures contracts rose and fell. Manganese silicon rose by nearly 5%, Shanghai tin and Shanghai nickel rose by more than 2%, and No. 20 rubber (NR) rose by nearly 2%. In terms of decline, caustic soda and eggs fell by more than 2%, soda ash, rapeseed meal, cotton yarn, and styrene (EB) fell by more than 1.5%.