Start with a Skeleton Soldier

You may have seen a person travel through time. But have you ever seen an entire city of 10,000 people traveling through it collectively? Not only that, everyone in this city has received a Book of Summoning! By chanting the initial spell in the Book of Summoning, you can summon your own initial summoned beast! Conquer more powerful wild monsters through the initial summoned monsters and use them for yourself! But Luo Lin's Book of Summoning seems to be a little different from others... "Fusion? Promotion?" Look at the two additional options that appear on the Book of Summoning. Luo Lin knew that he might not have time to write a time travel diary in the future. ---- PS: Summon pets apocalyptic stream, don't miss it if you like pet streams and apocalyptic genres. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.