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His sudden aggression was precisely because he had sensed the aura of the Heavenly Star Banner in the Northern Netherworld. As he had surmised, the remaining Heavenly Star Banners were all in the clutches of the ancestor Kunpeng.
"Heh heh, if this isn't called greed, then what is? The Heavenly Star Banner, that's the Demon Clan's most treasured artifact. Although an acquired item, its value surpasses even that of the Innate Spiritual Treasures."
"Do you know the great price I, the ancestor, had to pay to collect this treasure? Now, with just the opening of your mouth, you wish to take this treasure away. Do you think that's possible?"
Kunpeng's ancestor sneered, refusing to agree to Jiang Chen's terms. He felt that Jiang Chen was making an outrageous demand, simply opening his mouth to ask for the Heavenly Star Banner. Why didn't he just take the whole Northern Netherworld then?