C547 Fertile Water Does Not Flow to Foreign Lands

"Master Guan, isn't this Great Wall built too f * cking awesome? It's actually all built on the mountain, and the wall is so thick. It's been so many years and it still can't be broken down. How can it be built with technology that is so backward in the past?"

Bighead asked Guan Hao as he climbed along the steep path behind Guan Hao. This guy was just like that, forget about the pain