How to copy a layer from one to another?
Select the layer you are going to copy and right click, and then click duplicate layer to the destination document. You will see it in the new document.
How to make a row filling with the same thing?
You can type in two same thing in the two columns of one row, and then select this two columns and drag the little black "+" in the corner to where you want to be stopped.
How can the tone of the characters affect the meaning of the words?
For example, in the first tone of "yi" could mean one; in the second tone of "yi" could mean someone who has questions or are shocked; in the third tone of "yi" could mean ants or chairs; in the fourth tone of "yi" could mean discuss or different.