The structure and height of the remaining walls of the Three-Year Fortress

(1)sticking out in front of the walls of the city
(2)I did a simulation of a three-year acid attack
(3)This is how much the stones were collected and restored around the walls and surrounding walls that were all collapsed
(4)I think it’s hard to build this in 3 years
(5)Not only the height but also the thickness
(6)a terrifying wall that makes you wonder if it hasn’t collapsed
(7)I guess it meant that the Tang Dynasty members would be able to go over here