That man had no idea what Gu Lanshan was really thinking. He hadn't intended to hit a woman; he just wanted to try to break up the fight between the two women.
In particular, he wanted to stop Gu Lanshan from attacking Su Jiaojiao.
He took a step toward Gu Lanshan, his tone somewhat harsh as he said, "Whatever the issue is, we can resolve it peacefully. Resorting to violence is not right..."
Gu Lanshan couldn't care less about what the man was saying. As she saw him approaching, her eyes rolled, then she swiftly bent down, slipped off her high heels, and, without a word, hurled one at the man's head. The heel struck his forehead squarely, gashing a large piece of skin, and blood started to snake its way down.
Gu Lanshan's series of actions were swift and uninterrupted.