Pre-event Price:(1) in non-distribution scenarios, it refers to the commodity sales price before the pre-heating period (if there is no pre-heating period) of platform activities (excluding activities in distribution scenarios);(2) in the distribution scenario, the commodity sales price before the pre-heating period of the distribution activity (if there is no pre-heating period, it is the outbreak period).

The above prices are not calculated for various purchases issued by the platform.