A * * * needs 29 parts, and the red part in the second picture is the necessary part of the propeller.

At the bottom of the helicopter is the 1 2*4 board, the first blackboard in the first row.

On the second floor, there are four 3× 1 diagonal bricks (which can be replaced by two 3× 2 bricks) and two 2×2 diagonal bricks.

Third floor, 1 2*8 board.

The fourth floor is 1 3×2 inclined brick, 1 1*2 brick, 1 2*3 brick and 1 2×2 anti-inclined brick.

The fifth floor, two 2*2 boards (which can be changed into 2*4 boards 1) and 1 two 2*8 boards.

Assemble the main propeller and tail rotor.

Install the main propeller, tail propeller and landing gear, and a small helicopter will be assembled.

Origin: Denmark "LEGO", as the brand of LEGO, is a synthesis of the Danish word "leg godt", which means "have a good time". In Latin, this word means "I put them together" (I built them). Lego uses "play" as the self-expression of the brand, similar to "Lego"

By 20 19, Lego has 2 million members all over the world, and Fortune once rated Lego as "toy of the century". Who would have thought that when the prototype of Lego was born in 1932, it was just one of the commodities-a wooden toy built by Danish carpenter Ole Kirk Christiansen in a small village in Bilund.

Two years later, Lego had its own name "Lego". 1949, Lego began to produce plastic building blocks toys, which laid the basic form of Lego toys, but the real toy revolution did not happen until 1955.

That year, Lego first put forward the slogan of "playing with learning" and advocated a new concept of both learning and playing. 1958, Lego changed bricks into sockets, which became another milestone in Lego's history. Since then, Lego has made great progress in acceleration.