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.
I want you to do something for me. 
Will you do me a favor?
أحتاج شيئاً، هلّا أسديتِ لي معروفاً؟
Würdest du mir einen Gefallen tun
und etwas für mich erledigen?
Quiero que hagas algo por mí.
¿Me harás un favor?
Quiero que hagas algo por mí.
¿Me harás un favor?
J’ai une requête.
Ti devo chiedere una cosa... 
mi faresti un favore?
Quero que faça algo pra mim.
Pode me fazer um favor?
У меня есть просьба. Ты выполнишь её?