If you didn't want to call her by her full name, you could add some nicknames or nicknames such as " Ningning "," Little Ning "," Ning 'er ", etc. These terms of address were usually more intimate and heartwarming in novels. In addition, he could also consider giving her a title such as " Dear,"" Baby,"" Darling," and so on. These titles would be intimate and could express his love and concern for her.