In 2015, Liu Lun from Jiangsu was sorting through his late mother’s belongings when he stumbled upon a bank deposit slip for 6 million yuan. Excited, he rushed to the bank to cash it in. But as soon as the bank manager saw it, he said: “This is fake!” and immediately destroyed the deposit slip on the spot. It turned out that Liu Lun was about to leave for a new job in Sichuan. Before leaving, he remembered his mother’s dying words: “There’s an iron box in the attic. What’s inside is very important. You must take a look.” He returned to his old home, climbed up to the dusty attic, and found the rusty iron box. When he opened it, he found old photos and documents, with a yellowed deposit slip on top that clearly stated “Six Million Yuan Only.” Liu Lun’s hands trembled with excitement. His mother had been an accountant at a factory, living frugally her whole life. How could she have so much money? He imagined that this might be the enormous fortune his mother had left him. The next day, he asked his wife to take the deposit slip to the bank for verification. After a thorough inspection, the bank responded: “This is a forged financial document. The original will be confiscated according to the law and will not be returned.” Liu Lun was stunned. It wasn’t the money he cared about—it was the fact that the item his mother had entrusted to him so earnestly turned out to be fake. Over the next few months, he went everywhere asking about his mother’s past, flipping through old notebooks, and talking to her colleagues and neighbors, trying to uncover the origin of the deposit slip. The police also got involved in the investigation, but no definitive conclusion was ever reached. This incident caused quite a stir, and Liu Lun’s life changed dramatically because of it. Was it a mysterious fortune his mother had hidden for over 20 years, or just a fake deposit slip that was never cashed? To this day, it remains a mystery.