I traveled through hundreds of worlds at once

In the mechanical world, in the mechanical city of Liverpool, on the bustling streets, a large number of crude tinplate puppets powered by steam are diligently cleaning the streets.

"Too crude! Gears are not used like this! This crude transmission structure wastes at least one-third of the power! The use of gears here is too backward!"

Yi Hui, wearing the uniform of the Royal Mechanical Academy of Walpurgis, sat by the window of the tram, looking at the crowded streets and the crude steam-powered puppets working around him, his eyes full of awkwardness.

The passengers around him looked at him as if he was a lunatic.