The shell bone script of character Old Days is
There are 4 different forms of the characters, which is common for shell bone script when the characters were not unified. We see all of the forms having waves and sun, 3 have waves on the top, 1 has waves on the bottom. No matter what, it means the Great Flood time: only the waves and the sun left. It is long long time ago - Old Days.
The bronze script of the character is
The top are waves, and the bottom is Sun.
The big seal script of the character is