Embark on a thrilling journey with Howcat’s wooden puzzle, inspired by the classic "Twenty Thousand Leagues Under the Sea," and bring to life the adventure of the legendary Nautilus.

The Nautilus is a submarine designed and constructed by the enigmatic engineer and naval architect, Captain Nemo. Its appearance is described as that of a massive metallic jellyfish or nautilus shell, boasting exceptional hull strength and waterproof capabilities. Powered by an advanced electric propulsion system, the submarine is equipped with a powerful battery that allows for extended underwater voyages. Maneuvering is achieved through multiple propellers, providing flexibility in controlling forward, backward, and turning movements. Internally, the Nautilus is equipped with state-of-the-art technology, including electric lights, telescopes, oxygen supply systems, and underwater communication devices. Ample supplies of drinking water and food are stored to sustain the crew during prolonged journeys and expeditions. One of its most remarkable features is its ability to submerge to extreme depths of the ocean, reaching places unattainable by ordinary submarines. In the novel, it is described to have the capability to reach depths of twenty thousand leagues (approximately 32,000 kilometers), which also serves as the inspiration for the book's title, "Twenty Thousand Leagues Under the Sea."

The Steampunk Airship/Submarine features a submarine hull as the main body, with the addition of a flying component at the rear. The main propulsion is provided by dual propellers, complemented by air assist from twin compartments at the rear, enabling efficient forward thrust. Lift and stability are maintained by side buoyancy fans and elevators at the rear. Steering is achieved through twin rudders on the top and a vertical stabilizer located beneath the deck at the rear.

The MFantasy series are 3D assembly puzzles based on the theme of world classics, with various cultural elements and unrestrained imagination. It adopts a fantasy style in the creation and pays attention to details in the design, which is suitable for people of all ages. Through assembling, the interest in reading is motivated and finally guides people to read those classic fairy tales.