In 1997, City C applied to start an experiment called Psy-4.27, But was rejected by the relevant departments because the experiment involved violence and blood.
In 2009, a large number of children disappeared, and police investigations revealed that the experiment had been carried out illegally in the mountainous area.
In April 2009, the plan to destroy the test base was approved.
In December 2009, the base was destroyed, with thousands of casualties. At the same time, most of the rescued children had mental problems and were sent to Duankang Mental Hospital.
In 2010, crime rates in various cities reached an all-time high. The investigation found that most of the criminals were children who had been sent to mental hospitals. After discussion, City C decided to set up a special group, hand over the relevant incidents to the special group for management, and call the relevant criminals...
The Hidden One.