Insert a newline without entering in insert mode, vim

Question

I want insert newlines in normal mode in vim using Shift-Enter and Ctrl-Enter. I try some solutions and mixing solutions from Vim Wikia - Insert newline wi

Answer 1

Yank an empty line and shift-paste it:

Starting with cursor on empty line:

yy + (shift + p)

"yy" yanks the line, and "shift + p" insert it below, without entering insert mode.