In Zhu Ziqing's In a hurry, "the past is like smoke, blown away by the breeze and evaporated by Chu Yang." Read the word "thin" here.

Because the bag is relative to the thickness

And the fog here can't be measured by thickness, so it's bó.

The answer on the paper is also thin (bó) fog.

The easiest way is to type Wu Bo to get the word mist, but Baowu can't get it.