I went into this show already feeling skeptical, because our leads first meet when Sang Zhi was still a child and Duan Jiaxu already a university student. The writer did however an excellent job.

Sang Zhi fell for Jiaxu from their first meeting. Jiaxu only saw Sang Zhi as a younger sister he should protect.

They lost touch and met again when Sang Zhi was in university herself.

That's when they get close again and Duan Jiaxu slowly starts to see Sang Zhi from a different point of view. Sang Zhi is now a grown-up and shows her MATURITY numerous times by being there for Jiaxu and protecting him at all costs.

Their relationship is like a blooming flower. They have a beautiful bond and you'll see many sweet scenes.

When Sang Zhi's family finds about their relationship - keep in mind the 5 year difference. Duan Jiaxu does all he can to receive Sang Zhi's family's approval and the way both Zhi and Jiaxu treat this issue show immense maturity.

The ending was beautiful to watch. The leads had amazing chemistry, the story was beautiful... everything was beautiful overall.
So yes, don't be shy and give this show a try. Who knows?