Within fifteen days. Consumers can evaluate the order with gestures within 15 days after the order is completed, and can make follow-up reviews within 90 days after the order is completed. In other words, if the consumer does not leave a review within 15 days after the order is completed, it cannot be evaluated again. If there is no follow-up review within 90 days, it cannot be reviewed again. If it is a Douyin store that has been published, the evaluation is valid for a long time and will not expire.