The reason why Su Lizhen is called Su Lizhen is because Su Lizhen's mother is a big fan of Wong Kar Wai. She was probably addicted to the movie stories and couldn't extricate herself, so she gave her daughter such a name.
Su Lizhen met Zhou Muyun, only to realize that this Su Lizhen was not the other Su Lizhen, so Zhou Muyun did not belong to her at all.
Her name was Su Lizhen, and she was a simple and happy ordinary person, until one day she received a letter with a mailing address, and she met someone who made her fall in love again.