1. We move the cursor to the position where we want to insert the blank line, as shown below
2. Then we want to enter any character in the next cell where we want to insert the first blank row.
3, here we add a character as long as the character can be any character, as shown below I enter a.
4, select the two cells, as shown in the figure, automatically fill down the data.
5, select just fill the data, Ctrl+g Open the Positioning dialog box, in the positioning criteria to select "Null value"
6, and then you will see the effect shown below.
7, in the "Start"-"insert" under the "Insert Row" option,
8, so the empty line out, OK we now to clear the next character bar.
All right, this feeling is successful, feeling this insert empty line is more complicated than word, do not know the small part of the wrong, or there is a more simple way to achieve.