On Monday, 11 Sep 2017 at 04:36, jiewuza wrote:
> It is quite common to have multi-rows/columns cells in talbe. But as far
> as I know, it seems impossible with the org built-in table editor.

org does not support multi-row/column cells in tables.  When you say:

> It works.

what do you mean?  If I edit your example, org does not recognise it as
a table (or, at least, not a properly defined one).

-- 
: Eric S Fraga via Emacs 24.5.1, Org release_9.1-57-gc6e563