Three years ago, Yin, and Zhao lived together in a nomad settlement. The three of them were close childhood friends.
The sisters loved Zhao like a brother, but that eventually turned into romantic love.
While playing in the field as usual, they discover a broken construct.
Zhao is drawn to the workings of the strange machine.
Meanwhile, in the Taibai Empire, Chief Engineer Mo Heng is working on Zhengtian, the ultimate weapon.
Those I can't trust are not 
 allowed to leave alive.
من لا أثق به ليس مسموحاً له
أن يغادر حيّا
Wem ich nicht vertrauen kann,
der verlässt diesen Ort nicht lebendig.
Si no puedo confiar en ti,
no podrás salir vivo.
Si no puedo confiar en ti,
no podrás salir vivo.
Je ne peux laisser vivre
une personne douteuse.
Quelli di cui non posso fidarmi 
non possono essere lasciati vivi.
Aqueles em que não posso
confiar não podem ficar vivos.
Лишь тем, кому я доверяю,
дано уйти отсюда живыми.