While it's not strictly "up to down," Chinese characters are written in columns, starting from the top and moving down. The columns then read from right to left.
Here's a breakdown:
* Characters: Characters are written vertically within a column.
* Columns: Columns are read from top to bottom.
* Pages: Pages are read from right to left.
This is just one way to write Chinese; there are other styles and variations depending on the context and script.