Samsara Cauldron.

Shi Lang watched the old man vanish slowly with a faint smile on his face. The next moment he was surrounded by a soft golden glow and closed his eyes. When he opened them again, he looked around and found that he was standing inside the Alchemy Hall. 

The people were looking at him with their eyes wide open, and this included even the elders. Yang Bingshan stepped forward and asked, "Xiao Lang, you cleared the final question." 

His voice was unsteady and Shi Lang could see that his body was trembling a bit. The Terran looked at the thousand years question wall and found it blank. He mumbled, "I guess I did." 

One of the old people asked, "How did you answer the final questions?" 

Shi Lang looked at him and hesitated. Yang Bingshan said, "If this answer involves a secret than you don't have to share it with us. Old Tang just asked out of curiosity. We all have been waiting for ages to see this moment."