The investigation order from Yiye Tian was issued by the Council of Elders of the main hall, and this order does not mean that the person under investigation has been removed from their position, nor will it affect the normal rights of the person being investigated.
However, this order serves as a warning, alerting the person under investigation that some of their actions have raised suspicions among the higher-ups.
If the target of the investigation sees the order, they must cooperate with the actions of the investigating officer. Otherwise, regardless of whether the person under investigation is at fault or not, they will be punished by Yiye Tian.
So, when Qi Jingwei produced the investigation order, Ye Lingyun found herself at a disadvantage.