Those who support this book, please leave a footprint here and build a floor.

1 floor for 10 people

Two-story building with 100 people

Three-storey building with 1,000 people

Four-storey 10,000-storey building

Five floors and 100,000 floors

Six million-storey buildings

Seven floors and tens of millions of floors

Eight-storey building building

Nine-storey Babel Tower

I'll build a ten-person building! ~