At the beggining I must say two things.
The first I apologize for my bad English, I'm not a national speaker.
The second this is really my humble opinion, so please if you like this drama don't be angry. This is only my opinion and everybody has law to share their thoughts.

I chose this drama because I had mood for something in this genre. I don't know why, maybe I was a little tired because of my self-study everyday so I wanted to watch something undemanding. You know what I mean – something I don't have to think about.

So I found this and I started watching... and I finished this at one day. But it wasn't good, I finished it only because of it I didn't want to do something else. And also due the story line went so fast. I liked the speed.

Main plot is too cliche, it is so similar to Fifty Shades if you know this books/movies. And Fifty Shades is focused on BDSM and sexual plot. Addicted Heroin is focused on gay relationship (And I must to say I like BL lines, this isn't the reason why I dislike this) and it has so many similar elements like Fifty Shades. And Fifty Shades is primitive story where everything is wrong. So... because I see similarity in this, I can't like this.

Main characters... I don't know why Da Hai fell in love with someone like main character. Maybe I want better describing feelings, something like that.

I like two another characters more, Yang Meng and You Qi, they were so nice and their plot was nicer for me than the main romantic line. It's a pity they didn't have so much space for describing their relationship, it was really plain.

It was average, but at least it kept me looking at it. I don't think this is so beautiful BL drama. It's a shame.