As the battle between Ne Zha, Ao Bing, and the Four Dragon Kings raged on, a new and more sinister threat was emerging from the shadows. High above the chaos, in a hidden celestial realm, Wuliang Xianweng sat on his throne, his eyes fixed on the events unfolding in Chentangguan. A cold smile played on his lips as he watched the destruction and chaos he had set in motion.

"Wuliang Xianweng, the Dragon Kings are proving to be quite a challenge for Ne Zha and Ao Bing," said a servant standing beside him.

Wuliang Xianweng sneered. "Of course they are. But this is just the beginning. I have much bigger plans for those two. They think they can defy my will and the rules of the immortal realm? They're sorely mistaken."

Down in Chentangguan, Ne Zha and Ao Bing were fighting with all their might. But the continuous attacks from the Dragon Kings were taking a toll on them. Their spiritual powers were almost depleted, and their bodies were battered and bruised.

Just as they were about to launch another attack, a strange, dark energy filled the air. Ne Zha and Ao Bing looked up, their eyes filled with suspicion. "What's that?" Ne Zha asked, his voice filled with unease.

Before they could figure it out, a figure emerged from the darkness. It was Shen Gongbao. But he looked different. His eyes were filled with a mix of anger and despair, and his body was surrounded by a dark, menacing aura.

"Shen Gongbao! What are you doing here?" Ne Zha shouted. "Are you here to help the Dragon Kings?"

Shen Gongbao let out a bitter laugh. "Help them? I have no loyalty to anyone now. Wuliang Xianweng... he has destroyed everything I hold dear. He killed my family!"

Ne Zha and Ao Bing were shocked. "What? Why would he do that?" Ao Bing asked, his voice filled with disbelief.

Shen Gongbao gritted his teeth. "He wanted to eliminate any obstacles in his path. He's been using me all along, and now that I'm no longer useful to him, he got rid of me. And he's not done yet. He's planning to destroy Chentangguan and kill you two."

As Shen Gongbao spoke, a series of explosions rocked Chentangguan. The ground trembled, and buildings began to crumble. The townspeople, who had already endured so much, were now in even greater danger.

Ne Zha's eyes widened in horror. "What? We have to stop him! But how?"

Just then, a powerful blast of energy sent Shen Gongbao flying. Wuliang Xianweng had arrived. He floated in the air, his robes billowing in the wind, his eyes cold and calculating.

"So, you thought you could stop me?" he said, looking down at Ne Zha and Ao Bing. "You're nothing but pawns in my game. And now, it's time for you to be eliminated."

Ne Zha and Ao Bing stood their ground, their eyes filled with determination. "We won't let you hurt anyone else," Ne Zha said, his voice firm.

Wuliang Xianweng laughed. "You think you can stop me? You're just a demon and a traitor. You have no chance against me."

As the tension between them grew, Ne Zha couldn't help but think of his parents. He hoped they were safe. But little did he know, Wuliang Xianweng had already set his sights on them.

In the midst of the chaos, Li Jing and Lady Yin were trying to protect the townspeople. But the attacks from Wuliang Xianweng were too powerful. They were forced to retreat, their hearts filled with worry for Ne Zha.

Back in the battlefield, Ne Zha and Ao Bing launched a combined attack at Wuliang Xianweng. But their powers were no match for the immortal lord. He easily deflected their attacks and launched a counter - attack that sent them flying backwards.

"You're just wasting your time," Wuliang Xianweng said. "Soon, everything will be under my control."

But Ne Zha and Ao Bing were not ready to give up. They knew that they had to find a way to stop Wuliang Xianweng, not just for themselves, but for the people of Chentangguan and for Shen Gongbao's family. And so, they prepared to face the most powerful enemy they had ever encountered, their resolve stronger than ever.