On the rough sea, whenever ships encountering strong waves and are in danger, a giant dragon will roar in the sky, followed by bursts of green smoke to guide people out of danger. After a businessman was in danger and was rescued by a divine dragon, he sacrificed his daughter to the divine dragon to thank God for his kindness. The imperial court was also afraid of Shenlong's reputation and sent a princess to test the truth. Since then, there have been love legends about Shenlong across the rivers and seas.