The four great skills of Earth, Sky, Man, and Ghost at the Divine Detective Office each have their unique effects. Among the four techniques, three are already in use.
Ye Weiming's "Collection of Criminal Case Records" has abilities such as autopsy, crime scene investigation, and grief relations, which can be said to be pivotal in his rise.
San Yue's "Observing Words and Colors" is like a human lie detector. This skill, especially in her gifted hands, has had significant application in tasks and bargaining. Previously, she even boasted to Ye Weiming about her prowess in bargaining.
According to what San Yue said before, when she started, the only options left were "Man" and "Ghost". From this it can be inferred that the skill that Non-fish mastered must be the "Earth" skill among the four techniques.
