26 years of Jean d 'arc (Part 4)

"I've finished reading the daily records, but there are no major clues. How should I investigate? No, what exactly do I want to find out?"

Xu Qi 'an reviewed his clues and thoughts. At first, he investigated Emperor Yuan jing because he supported the North guarding King in massacring the city. The cost and reward were not proportional, which was very suspicious.

After a long investigation, Emperor Yuan jing indeed had a big problem, but Xu Qi 'an did not have a clear answer or direction to the specific problem.

"What I want to do is to unveil Emperor Yuan jing's mysterious veil. The soul pill, human trafficking, and the Dragon vein are all clues, but I lack a link to connect them. The core of soul contained the shadow of the Earth sect's Dao head, and so did the Dragon vein ...

"Luo Yuheng's train of thought is correct. Perhaps the earth sect's Dao chief is the link that connects everything. But How do I find the entry point?