Go to novelupdates and search for Harem novels. Then in sub tags, if you don't see the tag "Harem Seeking Protagonist" then 90% of the time the MC will be a dense protagonist. Ironically, Lin Feng will be one of the exceptions (even though he's dense now) and over the next 30-40 chapters in the LN he shows his affections romantically to his love interests.
@Shuzuchi - "I don't blame him too much. How could he know Meng Qing would get jealous, she treats him more like a subject that a lover. Liu Fei, though, ya boi shoulda knowt."
If Meng Qing hadn't reacted like that, he could've clarified the situation without either of them getting mad, so it's like a snowball effect..