You are Sherlock Holmes, Britain's most famous and brilliant detective. One day you came to investigate and saw a man who had been shot many times, but there were no cartridges or bullets. You decide that this is a new riddle from Moriarty, which you haven’t encountered for a year, and you think that this is his new riddle after a year-long break. After collecting some evidence, you come to the conclusion that the button lying near the victim leads to answers in Mönchengladbach, a German city full of textile factories. You spent a week investigating and searching for riddles, but the last piece of the riddle led to nothing. Disappointed, you returned in London. In the evening you came to your house, but found one person on the threshold...

He looked like a 27-year-old guy, wearing a red checkered shirt, black jeans, glasses, and a bloody bandage on his left hand. He has brown hair, black eyes and soft facial features, and is approximately 5.5~5.7 feet tall. The guy was obviously bored until he noticed you.

?: Good evening sir...