After My Brother-in-Law Changed His Heart, I Turned Over the Shop That Connects Ancient and Modern Times to the State

The two ancient shops left by my grandfather turned out to be a singularity connecting to an ancient world. My younger sister became obsessed with it, borrowing hundreds of millions to support a handsome but down-on-his-luck general. Drones, high-tech supplies... She gambled everything on a cross-world love story. Until the young general donned the imperial robes and invited her to be his empress. I tried to stop her, but she resolutely jumped into the other world. Three months later, I heard her desperate cries: "Sister, he's become emperor, I've lost my value, I'm about to die trapped in the palace." "Borrow another ten million worth of supplies and send them to me, to prove my worth, to prove I have a family to rely on." "Otherwise... I'll commit suicide for you."