昨夜贞子陪我睡
[zuó yè zhēn zi péi wŏ shuì]
This user name 'Zhenzi Slept With Me Last Night' alludes to the popular Japanese horror film 'Ring'. Here, 'Zhenzi' refers to the movie's main antagonist, Sadako, also known as Zhenzi in China. It indicates someone who perhaps experiences scary or haunting situations often, or enjoys creating a mysterious and eerie persona online.