The actual value refers to the value to be published now, the previous value is the value published last month, and the expected value is the expected actual value, which is the expected amount this time. Do you understand? For example, if you have 10 kg of cabbage in your hand, the market announced today's cabbage price at 8: 00 a.m. and sold it for 8 yuan a kg yesterday, then it may be announced like this. Actual value (not yet announced), previous value 8 yuan, expected.