C74 Even If Lu Ban Was Still Alive

As soon as Empress Zhangsun entered the courtyard, she heard clanging sounds coming from inside.

Accompanying the surprised voices of the Emperor.

"If this thing is spread out, it will definitely shock the world!"

"I don't even know how Zhao Chen came up with such a miraculous thing!"

"The Ministry of Works of the Great Tang is really losing a genius like you