Character design: Shen Yan, the male protagonist who is cold on the outside and hot on the inside but has a crush on the heroine for ten years (cold on the outside but has been secretly in love with the heroine for ten years, obsessed with details and crazy about protecting his wife) vs. Lin Xiaoyu, the heroine of the Little Sun (seems confused but is delicate and sensitive, warm and healing)
Core bond: Use "Strawberry Hairpin", "Silver Butterfly Hairpin", "Wrong Question Book", "Diary" and other tokens to connect ten years of two-way secret love, strengthening the sense of fate and exclusiveness
The core of sweet pet: the misplaced heartbeat of two-way secret love + the gentle teasing in details + the immersive sugaring of campus scenes, avoiding industrial saccharin, and enhancing emotional resonance with the "ten-year bond"
