Why can only "salt lake" form the effect of "mirror of the sky"?

(1) has high reflectivity. Although it can't be compared with a mirror, the increase of salt also increases the reflectivity.

(2) Sea water is salty even without waves, and the salinity is not low in some places. Why is there no mirror lake effect? It is precisely because of the waves, the waves have been fluctuating with the wind, and all kinds of small undercurrents appear randomly, which will break the man in the mirror, so if there is no fluctuation with the wind, there will be man in the mirror.

(3) The air problem, where the air is open, is actually not. Where there is water, the humidity is generally high, and the weather always feels "foggy". In Salt Lake City, this is not the case. It's not so humid and the air is fresh, so the problem of diffuse air reflection is relatively small (not without diffuse air reflection, just relatively small).

Personally, based on the above three points, salt lake has formed the effect of "mirror of the sky"