Both projects are Xianhuan genre, they are about an underdog who secretly has great powers.
If people love stories of growth and discovery then they will love Douluo Continent at least as much as they loved Fights Break Sphere, if not more.
Both dramas have a leveling-up system, for their powers.

Both dramas are in the sports genre.
Both dramas focus on sports, discovering the confidence in their skills, learning about team play, fighting for their dreams and success.
"|Hot Stove League" also showcases the management of a team and the work that goes on behind the scene, not only in competitions, but both dramas touch on character dynamics and relationships that help the characters grow (lessons).

They are both projects that are full of suspense and also contain the genre "crime and mystery".
The main characters from "You Are My Spring" both have a painful past and they are both growing up trying to cope and heal, one of the "antidotes" is companionship, trust, and love.

In "Flower of Evil" the main male character also has a painful past and secrets, and his story also develops in such a way in which he learns about trust, he learns what it means to truly connect to someone and how unconditional love works.

Both projects also contain a hint of romance, and the general feel/vibe of both series it's similar, they also have interesting twists and surprising story developement.