National Time Travel: I Start from the Nano Core

Tens of billions of people around the world each travel to a different world. Lu Chen traveled to the nanocore world and activated the god-level selection system. Complete the selection: Congratulations on gaining a hundred years of inner power! Complete selection: Congratulations on getting the GT-17 Baldr Nano Armor! Complete the selection: Congratulations on getting the Yuanxing Holy Ark! Unify the world, build a mechanical army, and win the favor of Bing Suixin, Mia, Lanque, Heya, and Hela! Nano Core, Cross Fire, Counter War, Qin Shi Mingyue, The Legend of the Condor Heroes... Traveled through thousands of realms, ruled the heavens, and took in countless concubines! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.