How many countries will participate in the Shanghai World Expo? How does the regional collapse and scale compare with previous world expositions?

Exhibition Name: China 20 10 Shanghai World Expo Exhibition Location: Riverside area between nanpu bridge and Lupu Bridge on both sides of Huangpu River in downtown Shanghai Theme: Better City, Better Life Duration: 2010.5.1-kloc-0/0.438+0, * */kloc. Venue area: 5.28 square kilometers; Number of visitors: It is estimated that 70 million people are a harmonious city, which is the essence of the theme of Shanghai World Expo. Expo Axis renderings 20 10 Shanghai World Expo will respond to the demand of "Better City, Better Life" with the concept of "harmonious city". China ancient culture contains the concept of "harmony". China culture advocates interpersonal harmony, harmony between man and nature, and harmony between body and mind. When describing the "Datong society", The Book of Rites puts forward: "The trip to the main road is fair to all, choose talents and abilities, and talk about faith." China's pre-Qin philosophers also envisaged a harmonious society in their respective works. At the same time, "harmony" is also found in the ideals of western sages. Pythagoras, an ancient Greek philosopher, systematically put forward the theory of harmony, which contained opposition and unity. Another philosopher of the same period, Heraclitus, further put forward the view that "invisible harmony is better than visible harmony". In the Republic and Law, Plato also began to seek the beautiful state that "the whole society will develop in a very harmonious way, and all classes will be blessed by nature". For hundreds of years, people have never stopped discussing the "harmonious city" model. From the "utopia" to the "ideal city" and then to the "garden city" in the18th century, a series of theories, propositions and models are all exploring how to establish the balance and harmony of the city in space, order, spiritual life and material intake. Since 1980s, with the increasingly serious problems of environment and development, the concept of sustainable development came into being. Most of the development strategies put forward by city governments around the world focus on how to rebuild the harmony between man and city, man and nature, and finally achieve the harmony between the present and the future. It can be seen that the pursuit and practice of "harmonious life" and "harmonious city" runs through the development history of human society and is increasingly manifested in the blueprint drawn by people for tomorrow's city. The fundamental foundation of building a "harmonious city" is the harmony between man and nature, man and man, spirit and material, which is embodied in the harmonious coexistence of multi-cultures, the harmonious development of urban economy, the harmonious life in the era of science and technology, the harmonious operation of community cells and the harmonious interaction between cities and villages. The concept of "harmonious city" will bring new challenges to urban management and urban planning, and promote them to a new height. Sub-theme analysis 1, the integration of urban multiculturalism From the beginning, the city was composed of all kinds of people. In the process of urban development, military, trade and immigration have further promoted the collision and integration of multi-cultures, and also formed the unique temperament of each city. On the one hand, this temperament is based on a city's cultural heritage and creative industries, on the other hand, it integrates the lifestyle and value orientation of various social groups and strata in the city. People all over the world pay more attention to cultural freedom and cultural identity than ever before. Under the background of globalization, urban culture is facing various impacts. The massive flow of information and people makes the collision between strong culture and weak culture, foreign culture and local culture, immigrant culture and mainstream culture in cities reach an unprecedented level. Multiculturalism means the harmony between history and the future. More and more city managers realize that the cultural strategy of giving consideration to history and future, promoting the harmonious coexistence of multiple cultures and the distinctive personality in the process of integration, that is, cultural identity, are important links in the sustainable development of cities. 2. The prosperity of urban economy The earliest cities developed from fairs. The driving force of urban economic development is the agglomeration effect of cities. In the era of knowledge economy, innovation and entrepreneurship are increasingly becoming the core driving forces for the sustainable development of urban economy. The innovation ability of a city is based on its scientific research strength, but more comes from the creative interaction between people. Although entrepreneurial ability is related to the wealth of a city, it is actually rooted in the cultural tradition of encouraging entrepreneurship. Whether a city has a high-quality working and living environment and the ability to attract first-class talents is directly related to its economic future. In addition, good infrastructure and complete service industry are also necessary conditions for urban economic prosperity. Needless to say, there is a conflict between urban economic development and environmental resources protection. Establishing circular economy model has become an important strategy to realize the sustainable development of cities. This economic development model advocates the 3R principle of reducing resource utilization, product reduce and waste recycling in production, and finally realizes the harmony between economic development and environment. 3. Urban Science and Technology Innovation The city is a huge stage for human science and technology innovation. Within the city wall, all kinds of innovative elements converge and blend, and innovative ideas are produced by people's intensive exchanges and interactions. At the same time, the R&D and production facilities in the city quickly transform the spark of innovation into technology, and then become products and services that benefit mankind. Since the 20th century, the rapid development of science and technology has made large-scale urbanization possible. At the same time, the enrichment and improvement of people's material life are concentrated in cities. Science and technology have greatly improved people's daily life, and this kind of material life has also left a deep imprint on people's cultural and spiritual life. 4. Remodeling urban community is the "cell" of the city and the usual living space form of urban people. Healthy "cells" can create a healthy and harmonious city. Cultural integration and economic prosperity are all realized with the community as the basic unit. The construction and transformation of urban communities has always been the most direct task faced by urban managers. How to make poor communities disappear from the social map of the city was once the most vivid and lasting puzzle in the history of urban development. Nowadays, the change of urban residents' structure in developed countries and the unprecedented growth of urban population in developing countries make this task even more arduous. In the Millennium Declaration, UN-Habitat put forward the goal of building a "slum-free city" and strived to significantly improve the lives of slum dwellers in the world cities by 2020. Under the goal of sustainable development, the urban community reconstruction in 2 1 century means that a "balanced community" must be created, which should have the following characteristics: reasonable composition of residents, reasonable housing ownership structure, perfect infrastructure, pleasant living environment, sufficient employment and entrepreneurial opportunities, and deep social cohesion. 5. Interaction between cities and villages Since the birth of cities, cities and villages have been interdependent in economy, society and environment. Rural residents make a living by selling products to cities, and the prosperity of cities also depends on the resources and needs of rural hinterland. Urban expansion has brought great pressure to non-renewable resources, and the new ideas of urban planning, the application of architecture and energy technology can alleviate this pressure to the greatest extent. At the same time, the influx of a large number of rural population has put forward an arduous task for urban management. On the one hand, the construction and transformation of urban communities will give the urbanized population a good living environment; On the other hand, the construction of small cities and market towns can also effectively reduce the pressure of population and employment in big cities. Under the impact of globalization, agricultural areas in some countries have lost their competitive advantages. Good interaction between urban and rural areas can help farmers successfully change their management and livelihood, or reshape the agricultural production structure and restore the competitiveness of agriculture. How to coordinate the flow of people, capital, logistics and information between urban and rural areas is closely related to the harmonious and synchronous development of urban and rural areas. At present, nearly half the world's population lives in rural areas. The difference between urban and rural areas in developing countries has prompted relevant international organizations to call for making full use of the complementary role and interconnection between rural areas and cities, and strive to eliminate rural poverty and improve rural living conditions while striving to eliminate urban poverty.