朱公徽蔭巡撫粵東時，往來商旅，多告無頭冤狀。千里行人，死不見尸，數客同遊，全無音信，積案纍纍，莫可究詰。初告，有司尚發牒行緝；迨投狀既多，竟置不問。公蒞任，歷稽舊案，狀中稱死者不下百餘，其千里無主者，更不知凡幾。公駭異惻怛，籌思廢寢。遍訪僚屬，迄少方略。於是潔誠熏沐，致檄城隍之神。已而齋寢，恍惚見一官僚，搢笏而入。問：「何官？」答云：「城隍劉某。」「將何言？」曰：「鬢邊垂雪，天際生雲，水中漂木，壁上安門。」言已而退。既醒，隱謎不解。輾轉終宵，忽悟曰：「垂雪者，老也；生雲者，龍也；水上木為舡；壁上門為戶：豈非『老龍舡戶』耶！」蓋省之東北，曰小嶺、曰藍關，源自老龍津，以達南海，嶺外巨商，每由此入粵。公遣武弁，密授機謀，捉龍津駕舟者，次第擒獲五十餘名，皆不械而服。蓋此等賊以舟渡為名，賺客登舟，或投蒙藥，或燒悶香，致客沉迷不醒；而後剖腹納石，以沉水底。冤慘極矣！自昭雪後，遐邇懽騰，謠頌成集焉。
朱公徽荫巡抚粤东时，往来商旅，多告无头冤状。千里行人，死不见尸，数客同游，全无音信，积案累累，莫可究诘。初告，有司尚发牒行缉；迨投状既多，竟置不问。公莅任，历稽旧案，状中称死者不下百余，其千里无主者，更不知凡几。公骇异恻怛，筹思废寝。遍访僚属，迄少方略。于是洁诚熏沐，致檄城隍之神。已而斋寝，恍惚见一官僚，搢笏而入。问：「何官？」答云：「城隍刘某。」「将何言？」曰：「鬓边垂雪，天际生云，水中漂木，壁上安门。」言已而退。既醒，隐谜不解。辗转终宵，忽悟曰：「垂雪者，老也；生云者，龙也；水上木为舡；壁上门为户：岂非『老龙舡户』耶！」盖省之东北，曰小岭、曰蓝关，源自老龙津，以达南海，岭外巨商，每由此入粤。公遣武弁，密授机谋，捉龙津驾舟者，次第擒获五十余名，皆不械而服。盖此等贼以舟渡为名，赚客登舟，或投蒙药，或烧闷香，致客沉迷不醒；而后剖腹纳石，以沉水底。冤惨极矣！自昭雪后，遐迩懽腾，谣颂成集焉。
When Lord Zhu Huiyin was governor of Guangdong, many travelling merchants brought him complaints of wrongs that had no clue to them. Men who had travelled far from home died, and their bodies were never found. Several merchants would set out together and never be heard of again. The cases piled up, and there was no getting to the bottom of them. When the complaints first came in, the officials concerned still sent out warrants for arrest. As the complaints multiplied, they stopped asking questions at all. When Lord Zhu took office, he went through all the old cases. The complaints named well over a hundred dead. Many more had come from far away with no one to claim them, and there was no knowing how many of those had died. He was shocked and grieved, and lay awake turning it over. He consulted all his subordinates, but hardly any of them had a plan. So he purified himself, bathed and burned incense, and sent a formal dispatch to the City God. Then he slept in the fasting chamber. In a daze he saw an official come in with a tablet tucked in his sash. “What official are you?” he asked. “The City God, Liu.” “What have you to say?” The official said: “Snow hangs at the temples, clouds rise at the sky’s edge, wood floats on the water, a door is set in the wall.” With that he withdrew. When Lord Zhu woke, he could not make out the riddle. He tossed and turned all night. Then suddenly it came to him. “Snow hanging means ‘old’. Clouds rising means ‘dragon’. Wood on the water is a boat. A door in the wall is a household. Is it not the Old Dragon boat households?” In the northeast of the province, at Xiaoling and Languan, there is a waterway that runs from Old Dragon Ford (Laolongjin) down to the Southern Sea. The great merchants from beyond the ridges usually came into Guangdong that way. Lord Zhu sent military officers with secret instructions to seize the boatmen who plied at Dragon Ford. One after another, more than fifty were caught, and all of them confessed without being put to torture. These robbers, it turned out, used the ferry as a cover. They lured travellers on board, then slipped them a knockout drug or burned a stupefying incense, so that the travellers sank into a stupor and did not wake. Then they split open their bellies, packed them with stones and sank them to the bottom of the water. Nothing could be crueller or more unjust! Once the wrongs were righted, people far and near rejoiced, and the songs in his praise filled a volume.