"For the earth, we are now outsiders. Therefore, we are far less familiar with the earth than xuanzhenghao. " Tianqingge said: "xuanzhenghao holds the boat of one yuan, and there is a compass in his hand. Not to mention the earth, he is also clear about many things in the universe. We have to start from xuanzhenghao to find tianpo and Hanlu. "

elder Bai Xian said, "but xuanzhenghao won't help us."

Tian Qingge smiled and said, "of course he won't help us, but we can exchange with him."

"now, what can we exchange?" Long qianjue is very strange, ask.

Tian Qingge said: "I have learned about some recent things....