I Have a Dimensional Trading Device

Blurb: After Zhang Xinyi did a good deed, the person she rescued gave her a gift. She thought it was just an ordinary necklace, but it turned out to be a trading device connected to different planes. With this necklace, Zhang Xinyi can trade a 21st-century Xinhua Dictionary for cutting-edge technology from the interstellar era, a lighter for Warring States antiques, rice for zombie cores... As she keeps trading, Zhang Xinyi discovers that she's become a big shot. Theme: Treasure life, no matter the circumstances