Two chopsticks are tied together with a rubber band. Notice that the two chopsticks are at 90 degrees.

And so on, make two rows of chopsticks racks and insert them together to form a bridge deck.

Both sides of the bridge deck are fixed with triangles.

Make two triangular pyramid piers.

Frame the bridge deck on two "piers". Fix piers and bridge decks with rubber bands.

Pull the top and both ends of the bridge deck with four rubber bands to form an oblique Lamian Noodles. Beauty is not thin.

Extended data:

Wooden bridge is the earliest form of bridge. Almost all bridges before Qin and Han Dynasties in China were wooden bridges. Such as the earliest wooden bridge and wooden column beam bridge. Boat bridges appeared around Shang and Zhou Dynasties, and row-column wooden beam bridges and outboard wooden beam bridges appeared around Warring States Period.

However, due to the characteristics of wood itself, such as looseness, perishable, and dominated by the strength and length of materials, it is not only difficult to build bridges on rivers with wide rivers, but also difficult to build durable bridges. So in the Northern and Southern Dynasties, it was replaced by a bridge with mixed wood and stone.

Stone and brick bridges. Generally speaking, the bridge deck structure is also a bridge made of stone or brick, but bridges made of pure brick are rare, usually made of brick, wood or masonry, and stone bridges are more common. During the Spring and Autumn Period and the Warring States Period, a stone pier and wooden beam span bridge appeared, and the Western Han Dynasty further developed into a stone pillar Liang Shi bridge, while the Eastern Han Dynasty saw a single-span stone arch bridge.

The Sui Dynasty created the world's first single-hole arc stone arch bridge with open shoulders, and Li Zhaode in the Tang Dynasty created the Liang Shi Bridge with multi-hole piers. The Song Dynasty witnessed the vigorous development of large stone bridges, creating Liang Shi Bridge which spans several miles at the intersection of rivers and seas, such as Luoyang Bridge and Ping 'an Bridge in Quanzhou, and large stone arch bridges, such as Lugou Bridge in Beijing and baodai bridge in Suzhou.

Bamboo bridge and rattan bridge. Mainly distributed in the south, especially in the southwest. Generally, it is only used on rivers with narrow river surface, or as a temporary crossing. In the early days, it was mainly a cable bridge. In the Northern and Southern Dynasties, the bamboo cable-stayed bridge was called "Ruxiang Bridge".

Later, bamboo cable bridge, bamboo pontoon bridge and bamboo slab bridge appeared. In ancient times, iron bridges included iron cable bridges and iron column bridges. The former belongs to the category of cable bridge, which is relatively common and appeared in the Tang Dynasty. The latter is a kind of beam bridge, which is actually a wood-iron mixed bridge, which is relatively rare. Jiangxi has seen an example.