Do You Remember What You Ate Yesterday?

In the name of "emotional stability", Hui'an Company regularly covers the short-term memory and emotional fluctuations of the city's residents through the control tower, and quantifies "happiness" into fluctuation thresholds. Those who are assessed as "highly volatile" will be "recommended" to participate in the "Emotional Relief Plan", which will actually clear their memory. The Hui'an underground hub stores the original memory data of all those who have been cleared - they do not actually delete it, but separate the person from their memory and seal it in its original form as a "training sample"...