Could be any of the key players. Maybe it's the mysterious Marcellus Wallace or the charming Pumpkin and Honey Bunny. Without more details, it's tough to make an accurate guess.
A cold smile or a hot haha was a kind of opposite smile. A cold smile was a smile that contained contempt, ridicule, helplessness, anger, and so on, while a hot haha was a kind of passionate smile. The cold smile and warm laughter were fake and pretentious, making people's hair stand on end. The word 'narrow-minded' was used to describe a person who was careless and big-hearted. Sometimes, it also implied that he was simple-minded. This word was usually used to describe a person's attitude of letting things that were related to their own interests develop in a bad direction.
The Laughing Man in 'Nine Stories' is a character within the stories. However, without more specific context about which 'Nine Stories' (as there could be many works with this title), it's hard to give a detailed account. He could be a symbol, a complex personality, or a key figure in the plot.
The answer to the Chinese zodiac was a dragon. " The wonders of the world " referred to the dragon. Because among the twelve zodiac animals, only the dragon did not exist in reality, so people thought it was magical. The dragon was one of the most representative animals in Chinese traditional culture and was often used to symbolize auspicious signs.