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					Chang'an, together with Rome, Cairo and 
					Athens, is known  
					as the four ancient capitals of the world. 
					During its heyday, Chang'an was one of the largest and  
					most populous cities in the world. Around AD 750,  
					Chang'an was called a "million man city" in Chinese records.
					 
					According to the census in 742 recorded in the New Book of 
					Tang,  
					362,921 families with 1,960,188 persons were counted in 
					Jingzhao Fu,  
					the metropolitan area including small cities in the 
					vicinity. 
					In the heyday of its development, it served as the center of
					 
					the eastern world, attracting a large number of foreign 
					envoys, monks  
					and businessmen.  
					
					 
					The famous Silk Road during the Western Han and Tang 
					Dynasties  
					started from Chang'an. 
					
					 
					Tang Chang'an City is magnificent in scale, rigorous in 
					layout,  
					symmetrical in structure and neat in arrangement. 
					The Suzaku Street running from north to south is a standard 
					central axis.  
					It connects Chengtian Gate in Miyagi, Suzaku Gate in 
					Imperial City, and  
					Mingde Gate in outer city, dividing Chang'an City into two 
					parts symmetrical  
					from east to west, Wannian County in the east,  
					and Wannian County in the east.  
					The west is Chang'an County, and there are two commercial 
					districts  
					in the east and west, called the East City and the West 
					City.  
					There are 11 streets in the north and south and 14 streets
					 
					in the east and west, dividing Chang'an City into 108 
					squares,  
					which are like a huge Go board. 
					
					 
					In Tang Chang'an's population, in addition to residents, 
					royalty, dignitaries,  
					soldiers, servants, servants, Buddhist monks and nuns, and
					 
					ethnic minorities, there were no less than 30,000 foreign 
					merchants,  
					messengers, students, and monks studying abroad.  
					At that time, as many as 300 countries and regions came to 
					Chang'an and  
					Tang Tong's envoys.  
					Tang's scientific and technological culture, political 
					system, food fashion, etc.  
					spread from Chang'an to all over the world.  
					In addition, Western culture was digested and recreated 
					through  
					Tang Chang'an City, and then spread to neighboring countries 
					and regions  
					such as Japan, North Korea, and Myanmar.  
					Tang Chang'an became a gathering place for commercial and 
					cultural  
					exchanges between the West and the East in the world,  
					and was the largest international metropolis in the world at 
					that time.  
					
					 
					In Japan, Heichengjing (now the western suburbs of Nara 
					City) and  
					Heianjing (now the center of Kyoto) highly imitated the 
					planning structure  
					of Chang'an City. 
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