The Seven Guardians take action

At night, a black car drove into the villa complex where Sienna Cather lived.
It didn't turn on its lights and stopped at an intersection like a ghost, and then a man walked out.
The man was about 40 years old, wearing a black jacket with a front opening, cloth shoes, and a mustache. When he walked, his arms hung naturally, and his feet walked in a zigzag pattern, which showed that his lower body was very stable.
He looked up, determined his target, and then walked towards Sienna Cather's...