The Emperor fulfilled Consort Shu's wish by mitigating her punishment, demoting her to Lady Shu, and confining her to her palace. Without his orders, no one was allowed to visit her, and she couldn't leave at will.
Empress Xie was very displeased with the Emperor's decision to not send Lady Shu to the Cold Palace. In her opinion, since the previous Prince Zheng committed so many crimes, Lady Shu, as his mother, could not be blameless. Whether by law or palace rules, Lady Shu should have been demoted to a palace maid and sent to the Cold Palace.
For this reason, Empress Xie specifically went to the Emperor, hoping he would severely punish Lady Shu. However, the Emperor rejected her request, saying that although Lady Shu did not teach her son well, her crime was not punishable by death.
Empress Xie, upon hearing this, was naturally angry and unsatisfied, but she could not openly contradict the Emperor. She could only resort to petty actions, such as reducing Lady Shu's allotment.
