Transmigration: I'm a Master Blacksmith in Another World

[Transmigration] [Otherworld] [Not an Overpowered Protagonist] [Not a Saint] [Leveling] [Meticulous] Twenty-three years ago, portals began appearing on Earth. Every month, a random ten thousand people vanished from the planet. Now, twenty-three years later, travel to another world has been classified as a "natural disaster." After the first five heroes, people also began returning from the other world one by one. As each returnee contributed their knowledge, information about the other world was added to textbooks for everyone to study. Xiang Qian, the child of one of the first heroes, was transmigrated to the other world while being kidnapped. The obsessions of gatekeepers, ordinary people struggling to survive, and the forgotten pasts of dungeon bosses. How should Xiang Qian make sense of everything he sees? A blacksmith class, a mysterious ring left behind by his parents, and a giant azure dragon that can take human form. What secrets are hidden in the other world? "What? You made this?" "Oh, it's just a little trinket I whipped up while I was at it."