The Boeing 747X was a planned airliner variant in the 747 series. It featured a full double-deck fuselage with greater passenger capacity compared to the semi-double-deck classic 747 models. However, due to certain reasons, the project remained on the drawing board. In the game Simple Planes, I created a B747X plane based on another user's Air China B747-8i. I modified the upper deck and landing gear, using the A380's gear to support additional weight. I initially planned to give it six engines, but I abandoned the idea due to accuracy (realistic 747X have four and my idea will bring high fuel consumption) and insufficient ground clearance for the engines. I reverted to four, which resulted in slightly different engine placements compared to both the original aircraft and the real 747. If my modification infringes upon anyone's rights, please contact me and I will remove it.