The Rapids Dragon known as Yi Angde Jingkong was over one hundred and sixty years old and had participated in the Era of the Dragon hunting in Yimoduoya twice. During the last Era of the Dragon in Yimoduoya, the emergence of dragon slayers struck great fear into the Dragon Clan. Yi Angde had watched as his usually proud and arrogant companions were slain by the dragon slayers and had even been frightened by them before. But in the end, the strength of the Giant Dragons was something humans simply could not match. The Dragon Clan had claimed the ultimate victory and defeated the dragon slayers.
This time, he arrived in Yimoduoya ahead of others to communicate the "Tribute Decree" to the Lords with the intention of preventing a repeat of the last Era of the Dragon, where a major battle took place between dragons and humans, causing humans to fall into disarray within their own ranks.