Thank you for sharing this! I'm so refreshed to see effective Haiku structure from you! Perhaps not intentional; but well delivered!

The first line has an expert natural comment: the hiding sun. I like that image, like the sun is fleeing or trying to be sneaky. Perhaps hiding itself to steal happiness away from the people slipping into shadows.

The second line alters the tone to make it more relaxed, and that the hiding isn't a bad thing, perhaps a natural phenomenon that is like falling asleep all the day's worries gone.

The final line clinches the poem for me; and to me, is where your insight and grace shines through.

Typical haikus have a juxtaposition in the last line; a commentary on the natural thing introduced in the first line, and you make it so smiling here:

"Tales, laughters begins."

(I would suggest removing the "s" from "begins").

The hiding sun the fleeing light does not dampen the mood! It does not bring peaceful death, or cease of action, but actually inspires laughter! It incites story telling! It creates an opportunity for celebration and joy! I found this in direct contrast to the opening images in the first two lines: the hiding sun, and the cold wind.

Thank you so much for this! Keep going!