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.
The sword was forged by the Yellow Emperor
صنعه الإمبراطور الأصفر
Diese Klinge wurde
einst vom Gelben Kaiser
La espada la forjaron
el emperador amarillo
Fue forjada por
el emperador amarillo
L’empereur Xuan Yuan
et une fille céleste ont forgé
La spada è stata forgiata 
dall'Imperatore Giallo
Essa espada foi forjada
pelo Imperador Amarelo
Он был выкован Жёлтым императором
и небесной девой в мифическую эпоху.