The first time I saw Yang Yang was in cdrama "You are my glory". I was blinded by his beauty, entertained by the story, but I found him and his acting a little stiff. It seemed like he had just one or two expressions and kept using them over and over again.
Then I started this drama and found a versatile actor, able to portray the different stages and attitudes of a boy growing up, facing hardship and finding his way in the world despite everything.
FL was very good too and I really appreciated her duality: strong and resolute in her job, fragile and insecure in her private life.
Leaving aside action and hospital scene, which weren't so realistic (and the toxic mother which we are unfortunately used to), the relationships portrayed are quite realistic and engaging.