War flames sweep across the northern frontier. A great general dies when his blade breaks, and a shocking military arms scandal rocks the court. By imperial decree, the cold and calculating minister Xiao Jue investigates the case. In an ironworks that seems like an earthly inferno, he discovers Jiang Zhuo, a convict slave burdened by a blood feud.
Grimy and disheveled, she possesses a remarkable skill: with one glance, she can tell whether a weapon will hold or break. He uses his power to keep her by his side, treating her as a weapon in his investigation.
What begins as a cold arrangement of convenience quietly changes as they travel together to the mines and endure deadly plots side by side. Inferior ore, enemy collusion and smuggling, the shadow of a prince… The truth burns like a blazing furnace, closing in on them.
When a flawless frame-up lands her in prison, he is willing to resign his post and imprison himself to join her in the abyss. In the imperial prison, a coded message written in blood and ash patterns offer the only hope of striking back from the brink.
In the golden hall, she uses her craft to debate the assembled scholars, while he tears apart the veil of secrecy with thunderous force. Her name is cleared, and a prosperous age is about to begin.
He turns down honors and offers to rebuild the empire’s military industries for her. She gives up wealth and status to become the greatest female craftswoman in the land. Before the blazing furnaces of that hellish ironworks, cool jade and fierce fire become an alliance of equals, protecting a peaceful and prosperous realm together.
The plot is very attractive, I stayed up late watching it