The middle is one line which is the head, above the line are hair, and below the line is the body of a person. The hair is Long.
The bronze script of the character is
Similar to the shell bone script.
The big seal script of the character is
Similar to the older scripts.
The small seal script of the character is
The top is hair. But the bottom is complex. 《象形字典》（Dictionary of Pictography) explanation is that an old man with a crutch, old man has longer hair because there was no knife to cut hair in ancient time, the older person is, the longer his hair.
The clerical script of the character is
Some similarity to the small seal script.
The song typeface for simplified character is
Almost same as the clerical script.
The simplified song typeface of the character is
Only one hair left on the top.
The character also means Growth or Grow, the long hair is from growth of the hair.
Its Pinyin for Long is Chang2, for Growth is Zhang3.