C1005 Lake Assassination
Shen Longxuan and the rest listened to Huang Tianhou reciting like he was reciting an incantation, and after the time it took for an incense stick to burn, no one else could tell, but Shen Longxuan had been a civil servant before, so he was naturally able to hear everything clearly.
Elder Huang was indeed talking about this lake. However, according to the book