How to write blue sky?

The blue characters in the blue sky are horizontal, vertical, vertical, vertical, left, horizontal, dot, vertical, horizontal fold, vertical, vertical and horizontal.

Blue (pinyin: lán) is a first-class standard Chinese character (commonly used word). This word began to appear in the Warring States script, and the ancient glyph came from the sound. The original meaning of "blue" refers to Polygonum cuspidatum (a herb), and the extracted indigo can be used as a dye, and later it is extended to the color dyed by indigo, that is, blue.