Autumn's Concerto- The kid is the lead's child together and he is so smart, this can be an spoiler because involves secret pregnancy. He'll win you over in 2 seconds, he's such a cutie pie. Once he's born he appears in every episode.
Blade Man- The child is the male lead's with another woman and the female lead takes care of him. Very touching father-son story.
Eternal Love, aka Ten Miles of Peach Blossoms- A-Li, the leads' son, doesn't come until later in the drama but, he steals the show. He's a cutie and so bright.