City Loop Double-Decker Bus (Qiji 3904)

About this set

This is KEEPPLEY 3904, a double-decker city bus from the Ali series, listed at 6+ and rated 2/5 for difficulty. It comes with 606 pieces and three minifigures, and the built model is a red double-decker bus with wheels and openable doors, plus a postbox to round out the street corner. The build is straightforward: sort the bags first, assemble the chassis and wheels before stacking the body, and group the repeated parts for the upper deck and railings so you can attach them in one pass. Watch the door alignment and make sure the body panels click fully together when you close it up. At 606 pieces with three figures and a postbox, it suits newer builders or Ali series fans looking for a compact street scene to put together in an afternoon.