2. Golden face down, folded in half

3. Fold one side down by about one third.

4. The other side is folded in the same direction and aligned with the broken line of the golden face.

5. The four corners are folded in half with the intersection of gold and white as the axis, and then the non-gold part above is turned down to become a trapezoid.

Open the long side

7. Plastic surgery

Extended data:

Paper, made of plant fibers, can be folded and written at will.

The earliest paper existed in the early years of the Western Han Dynasty 2200 years ago, but it was still rough and not widely used.

Baidu Encyclopedia-Paper was improved by Cai Lun in the Eastern Han Dynasty in 105, and is regarded as the originator of modern papermaking. ("Cyperus esculentus" is not the "paper" in the current concept, but a writing medium made by treating Cyperus esculentus with vegetable oil to a certain extent. China invented papermaking, which broke the original arrangement of plant fibers and made them cross randomly again, so that the finished product could be called "paper". )

References:

Baidu Encyclopedia-Papers