The girl that appeared out of the tianshu bamboo writing strip is Yun, a doll made using Mujia.
Yun calls the sword that appeared out of the tianshu the legendary Xuan Yuan Sword. Through Yun, Yin and Ning acquire new power.
Meanwhile, with a single word from Empress Cheng, Zhao is made chief engineer. He now works on developing constructs.
Mo Heng, who betrayed the empire and joined the rebel army, is also working on a new weapon he calls black fire armor.
Your Majesty, why have you appointed 
that boy Chief Engineer?
جلالتك، لمَ عيّنتِ ذاك الصبيّ كبير المهندسين؟
Eure Majestät, wieso habt Ihr
diesen Burschen zum Chefingenieur ernannt?
Majestad, ¿por qué nombró
a ese chico ingeniero jefe?
Majestad, ¿por qué nombró
a ese chico ingeniero jefe?
Votre Majesté,
pourquoi favorisez-vous ce garçon ?
Vostra Maestà, perché avete nominato 
ingegnere capo quel ragazzo?
Vossa Majestade, por que apontou aquele
menino como Chefe Engenheiro?
Ваше величество, почему вы сделали
юношу главным инженером?