Why does Yu Shao like Shi Lan in The Bright Moon in Qin Dynasty?

It was love at first sight, well, it was beautiful ~ Maybe it was when they played hidden bats together, maybe when they watched the stars and the moon together, maybe when Shi Lan caught Yu Shao in the wonderful moonlight, maybe when Shi Lan smiled on the eaves, maybe when he saw the strange purple pupil "teenager", he already liked it.

They have many similarities.

The same fate, the same life experience, the same national subjugation, the same nobility, the same sadness.

Well, that's it.

O (∩ _ ∩) O is expected.