Suspense Reasoning Detective Dee: the Luoyang Ghost Ship Case

In the changing times of the Tang Dynasty, Luoyang City's water transportation was busy as usual. However, a sudden series of murders shattered the tranquility of this ancient city in an instant. Two cargo ships belonging to the Jiangnan Silk Merchant Gang mysteriously disappeared in just three days. None of the crew members survived. The deceased were smiling, but no property was missing in the cabin. The only clue left behind was a piece of silk with a painting of "Headless Guanyin"...