Suddenly, the system's rumbling voice rang in Li Cheng's ears.
"Ding, dong, you're building the Mythical-grade Rock Fortress city wall. You've triggered the Ancient God of Science and Technology's research log. Your city wall has been raised to the Immortal grade!
"Ding, dong..."
Hearing this, Li Cheng was stunned. As expected, he had triggered the research log and the level of the wall had been raised. It was indeed a little ridiculous!
The Immortal-grade city wall would take significant effort to destroy even if a God came in person. Thinking of this, Li Cheng quickly checked the attributes of the city wall.
[Rock Fortress city wall]
