Used to describe the extent to which an object extends laterally or the extension of time.
There is also the word "long" in Weiqi, which means that the pieces of both sides are closely in the same direction, and the pieces of the former side are always higher than the other side.
"Chang" is a Chinese character, pronounced as "Chang" (two sounds) and "Zhang" (three sounds), which is often used as a geometric concept, also known as "length".
It can also be read as Zhang (three tones), which means to grow, grow.