The Expo Axis is more than simply an axis. It is a kilometer-long, massive semi-open building with two underground levels, one above ground, and a canopy with viewing, recreational, and commercial areas. Of course, the more important thing is its access to the transportation function - from the Expo Axis sky platform or underground passage, visitors can easily travel between the China Pavilion, Pudong Theme Pavilion Group, Expo Center, Expo Performing Arts Center and other most important buildings in the Expo Park; the Expo Axis is also connected with the elevated walkway across the Pudong Expo Park, which is the transportation hub of the Park, and visitors enter the Park. The Expo Axis is also connected with the elevated walkway across the Pudong World Expo Park, which is the transportation hub in the park, and visitors can access to different areas after entering the park. Special Steel StageThe Special Steel Stage is a performance venue transformed from the former Special Steel Workshop of Shanghai Iron and Steel No.3 Factory. It is located in the Expo Park in Pudong Area B. With an area of more than 10,000 square meters and an audience of 3,500 seats, it is designed as an open landscape performance venue. Set against the beautiful environment of the Pujiang River and the Expo Park, the TISCO Grand Stage presents a unique artistic flavor. With the ability to host a variety of ceremonial performances, the TISCO Grand Stage will be the main venue for major events and other large-scale thematic activities.

Large shipyards, which few people have ever heard of and which were originally industrial facilities, can also be used as performance venues. 2010 Shanghai World Expo Park will realize this bold idea. In the World Expo Puxi Park Area D is the Pujiang River industrial site of the preservation area, the World Expo planning the use of the preserved three docks, two ship platforms, and will be part of the surrounding area into an open plaza space, forming an area of nearly 60,000 square meters of activity venues, which can accommodate 8,000 people for recreation and leisure, performing arts demonstrations and other cultural and artistic performance activities. It is believed that such a special stage design will leave a deep impression on visitors.

According to the plan, in addition to the above activity venues, there are many other venues in the Expo area that can be used for public rest and cultural and performing arts activities, with more than 30 large and small ****, accounting for about one tenth of the total area of the park. Since December 2006, the Expo Axis project has overcome a series of difficult design and construction hurdles, such as huge and complex project volume, roof program adjustment, "Sunny Valley" and cable membrane structure design and production, underground space construction volume and risk control. After 22 months of struggle, the project 180,000 square meters of underground space structure has been mostly completed, the ground 10 meters high platform structure image engineering has been completed 16,000 square meters.

Expo Axis "Sunny Valley" steel structure lifting construction, marking the Expo Axis construction began from the underground to the upper part of the main image project changes, from a single project to the complex engineering construction changes, from a single type of work to the comprehensive construction of multiple types of changes, also marks the Expo Axis cable membrane, glass curtain wall, electromechanical installation, ground source heat pump, river water source air-conditioning and other specialty projects. It also marks that the Expo axis cable membrane, glass curtain wall, electromechanical installation, ground source heat pump, river water source air-conditioning and other specialized projects are about to enter a comprehensive construction stage.

As the largest single project in the Shanghai World Expo Park, the Expo Axis covers a total area of about 130,000 square meters, with a total construction area of about 250,000 square meters, of which about 180,000 square meters are underground space and 70,000 square meters are above ground. The total investment of the project is about 3.5 billion RMB.

The full name of the Expo Axis is Expo Axis and Underground Complex Project, both the Shanghai World Expo Park's central traffic landscape axis, but also connects the park China Pavilion, Theme Pavilions, Expo Center, Performing Arts Center and other four major permanent venues and the surrounding No. 7, No. 8 rail transit line of the main channel, but also the main entrances and exits of the World Expo Park. It is reported that the Expo axis in the World Expo half a year after the end of the session, will be developed into a set of commercial services, catering, entertainment, transport interchange, exhibition services in one of the multi-functional, mega transportation business complex. Shanghai World Expo Park in the "artery" Expo axis has appeared in the beginning of the style. In this avenue about 1000 meters long and 100 meters wide, staggered distribution of six visually stunning inverted cone-shaped steel structure, they have a warm name, called "Sunny Valley" --- As the name suggests, they allow natural light to fall on the "valley floor". 6 "Sunshine Valley" have different shapes and sizes. Their upper openings are as large as a soccer field, and the overall height is more than 40 meters, more than ten floors high. The whole building is like a glass trumpet flower quietly blooming from the ground, crystal clear. During the Expo, the interior of each "Sunshine Valley" will be themed on a natural resource (fire, trees, earth, water, metal and atmosphere), expressed through courtyards, reflecting the intersection of nature and technology. As the elements of the sky, such as sunlight, air and rain, are introduced into the underground space by these "open flowers", the Expo Axis will have a more romantic atmosphere.

Besides the visual aesthetics, the "Sunshine Valley" also contains an important scientific and technological concept --- to create a comfortable "green underground space".

The sun will shine through the glass, will it be hot? The Expo Axis will be sprayed, the use of natural wind, the use of Huangpu River water and heat pumps and other environmentally friendly cooling methods to ensure that visitors can comfortably wander the Expo Axis. In addition, the Expo axis of the "membrane structure" can also play a good shade effect. Overhead of these "umbrella" by 69 pieces of huge white membrane cloth assembly composition, a total area of 68,000 square meters, life expectancy of 30 years, although the thickness of only 1 mm, the design tension has reached the world's highest strength: 5 tons per meter. The special feature of this membrane is that the maximum wind swing to the upper and lower 3 meters, gusts of wind blowing, the membrane cloth is like clouds dancing with the wind.

The steel structure of the "Sunshine Valley" and the membrane structure together are both rigid and flexible. This state-of-the-art technology gives the Expo Axis a "gentle" humanized quality. 6 "Sunny Valley" **** there are more than 10,000 steel nodes, each node has 4-6 rods intersecting, as if an open palm. The nodes are intersected by 4-6 poles on each node, as if an open palm. The splicing of these nodes, even a small error, will eventually lead to "trumpet flower" upper part can not be closed, so the building precision requirements are quite harsh, with world-class difficulty. However, with the successful construction of "Sunny Valley", this difficult node technology has been reused in the construction of a water gate in the Expo area across the Huangpu River.

The Expo Axis is divided into two floors above ground and two underground. When you walk in this huge passage, there is sunshine in front of you, and the sky is clear when you look up. Concerned about people, nature, the way of living with technology, "connecting the sky and the earth", this is the Expo axis gives people moving. It is reported that this 280,000 square meter building will become the third municipal center after People's Square and Lujiazui after the Expo.