Countdown to Time Travel: Returning to the Right Place Every Year, Copper and Jade Serve as Guides

(No brainless battle of wits, no harem, pure technological development.) Xu Qi accidentally got a bronze ring, which accidentally activated the white jade space. Through the countdown in the dream, we can infer the time travel one year later. He sold off his real estate and hoarded key supplies, preparing to leave this world without nostalgia and go to ancient times to do something great.