Sure, no problem! Okay, with the caveat that I only watched once and as the eps were released so in fits and starts... major (general but not super plot specific) spoilers ahead:
A major theme was Shen Yi being able to use his skills to 'see' evil in people- like their inner demons and whatnot- and use that to try to predict who would commit crimes. The 'evil' was often talked about like it was a part of who the person was, not who they became due to circumstances. It had come up and played out in a few ways and then there was an arc where they introduced this nouveau riche type 20something via his mom's murder and it was talked about how he had this genetic disorder that made him cruel and violent (I don't recall the exact specifics of this something about a MAO-something something gene) and it also made him unable to have kids but he'd still gotten a woman pregnant (which was important for family drama related reasons) and through that storyline we're introduced to a lab that did gene editing and that lab and more are major aspects to various cases from then on. And there's whole monologues by various characters about the lab and what it could/should do for society if it could find/fix genetic/DNA 'defects' and whatnot. The DNA determines thing is doubled and tripled down on and becomes a storyline to the point the department gets a DNA sequencer (this was very ?? and presented as an aside) and the team all gets their dna run to learn what they're predisposed to like fatness and baldness and whatnot.
no subject
A major theme was Shen Yi being able to use his skills to 'see' evil in people- like their inner demons and whatnot- and use that to try to predict who would commit crimes. The 'evil' was often talked about like it was a part of who the person was, not who they became due to circumstances. It had come up and played out in a few ways and then there was an arc where they introduced this nouveau riche type 20something via his mom's murder and it was talked about how he had this genetic disorder that made him cruel and violent (I don't recall the exact specifics of this something about a MAO-something something gene) and it also made him unable to have kids but he'd still gotten a woman pregnant (which was important for family drama related reasons) and through that storyline we're introduced to a lab that did gene editing and that lab and more are major aspects to various cases from then on. And there's whole monologues by various characters about the lab and what it could/should do for society if it could find/fix genetic/DNA 'defects' and whatnot. The DNA determines thing is doubled and tripled down on and becomes a storyline to the point the department gets a DNA sequencer (this was very ?? and presented as an aside) and the team all gets their dna run to learn what they're predisposed to like fatness and baldness and whatnot.