The Mystery of the Underworld

June in the foggy city is always wrapped in continuous rain. At midnight, a call from the Municipal Criminal Investigation Detachment suddenly broke through the silence of the duty room. The voice coming from the receiver was trembling uncontrollably, like a cotton thread swollen by rain, and would break with the slightest force. "Hey... Are you the police? I want to report a crime... Someone is dead... In the old bungalow in Huaianli in the south of the city, the owner is Shen Jingyan..." The person who answered the phone was team leader Lu Chen, who had just finished working overtime all night. He rubbed his swollen temples, the bitter taste of coffee still lingering on his fingertips. Huaianli is a famous old neighborhood in Wucheng. All the bungalows from the Republic of China are hidden behind the dense plane trees. Most of them are retired old professors or collectors. He has an impression of Shen Jingyan's name - a well-known antique collector in Wucheng. He is especially obsessed with clocks from the late Qing Dynasty and the early Republic of China. He even held a personal collection exhibition at the city museum last year. Twenty minutes later, Lu Chen rushed to Huaianli with team member Lin Xiao and forensic doctor Lao Chen. The rain hadn't stopped yet, and fine raindrops hit the dark police car, causing tiny splashes of water. No. 17 Huaianli is a three-story red brick bungalow. The wrought iron door is ajar, and the copper bell on the doorpost sways gently in the wind, making a soft "ding" sound, which is particularly harsh in the silent rainy night. "Captain, the door is unlocked." When Lin Xiao opened the door, the beam of the flashlight swept across the bluestone path in the courtyard. There were a few rotten sycamore leaves on it, and a series of vague footprints. The edges of the footprints were blurred by the rain, and the specific lines could not be seen clearly. Walking into the living room, there was a musty smell mixed with it.