Over the New Year holiday, I had some free time and suddenly got the idea to write a novel. The story follows Cen Leng, who is accidentally injured while carrying out a mission and left paralyzed. A year later, a phone call from a mysterious person draws Cen Leng into a murder case, where they discover a handkerchief marked "Zhu Tong." The truth behind it is shrouded in mystery. What does the "Zhu Tong" handkerchief represent? Who is the mysterious caller? Is the person who injured Cen Leng and left them paralyzed the same mysterious caller?