In the first encounter in the winter in Songmo, in the deep conversation between Yun Lan and Yun Lan, a certain warm emotion like a tide was quietly flowing over the shore of reason, leaving a warm trace. It is clearly visible, but it is also destined to return to the calm beach before every rising sun, just like the traces of the tide.
The snow line is eternal, and the tide marks are proof of the turbulence known only to each other.
Concept: ideal world