They are twins, one is called An and the other is called Bo.
Xu An is the elder brother, silent, precocious, and keeps all the wind and waves on his side; Xu Bo is the younger brother, like a little sun, but he doesn't know that he has been protected by his elder brother for seventeen years.
From the day he lost his parents, Xu An carried everything for Xu Bo - including the injuries that Xu Bo didn't even know existed. He never spoke of love, but every movement said: Don't be afraid, I'm here.
Of the same origin, in the same place.
Concept: Love is the support of silence, it is one person remembering the shape of all wounds for another person.