Due to the definition of position rules, in normal times, the positions of CICC are reduced by 1 lot on both sides, so-1 is displayed, and the other three futures exchanges display -2.
The current refers to the last transaction on the current disk, which is still due to the CICC rule. The last transaction is 1 lot, so 1 is displayed. If it is on the other three futures exchanges, it shows 2.