He continued following her after Feng Xiao Qing finished beating up the thugs. His intention had changed --- he didn't follow her to guard her but he wanted to know where she would go next. He wanted to know this woman's identity just to make sure that she wasn't Red Jasmine, after all, people could get a similar tattoo with each other as well.
Once he saw Feng Xiao Qing arrived at her apartment from afar, he furrowed his eyebrows. He didn't think Red Jasmine had the ability to purchase such a high-end apartment so she probably wasn't the same person.
He really wanted to laugh at his silliness because their faces were already so different like heaven and earth. The way they carried their bodies were also different --- one always walked like a thug while this woman walked with a womanly charm that attracted him from the very first sight.
The man felt that it was time to leave when the woman had gone inside. She was already safe.