Don't Underestimate Me, I'm an Immortal

Bai Zhi thinks her fate as a sacrificial side character is sealed, and that a lifetime of loneliness is the tribulation written in her stars. The person she has loved in secret for tens of thousands of years was the apple of her eye, but she didn’t know when he was reincarnated and missed the perfect chance to confess. What a blunder! When the person she loves reincarnated again, she managed to catch up with him. But now she’s a five-hundred-year-old dumpling’s mother. What a blunder!! Worse, she has to help the person she loves find a match. Isn’t that just rubbing salt in her wounds? What a blunder!!! Why is she, an immortal, still being bullied by a mere mortal? What a blunder indeed!!! Bai Zhi smiled darkly. “Don’t underestimate me. I’m an immortal.” Someone replied calmly, “Oh? Is that so, Zhi Zhi? How can you prove you’re an immortal?” Bai Zhi: “...” Would a little lightning bolt that could kill you do the trick?