According to legend, River Long En was safeguarded against floods and rain by a revered white dragon known as the River Lord. The locals held the dragon in high regard and called him by that name. Unfortunately, the Dragon discovered that the yearly festival to honor the river god had been disregarded for several years. This neglect frustrated him, causing River Lord Huan Yi to vow to withhold rain from Long En town. What ensued at the river god's palace pond surpassed his expectations.