【正文】 on the gatetower are the names of the park specially inscribed by general secretary jiangzemin before the construction of the park.the national defense park is located as far away as jinlingyi castle builtby king wei of chu in 333 .。 later, in view of the dangerous situation ofstone mountain, sun quan of the eastern wu dynasty built stone city and beacontower on the former site of jinlingyi in 212 . in order to guard the gatewayof jiankang。 in the yixi period of the eastern jin dynasty, he also builtentering han tower, which became an important military town of jiankang。 atthe end of the tang dynasty, the stone city was rebuilt. in the ming dynasty,zhu yuanzhang expanded the famous nanjing city wall to reinforce and repair thestone city.now there is a city wall more than one kilometer at the foot of the westside of the mountain, which is the original of history. there is a huge stone onthe city wall, which looks like a grim face due to the weathering of ore, this section of shicheng site, also known as the ghost face city, isan important part of the famous shicheng scenic spot and has been listed as akey cultural relic protection unit in jiangsu province. in 1975, rade dengxiaoping, then vice premier of the state council, made a special trip toacpany dprk prime minister kim il sung.the former military area has bee a famous place for national defenseeducation and patriotism education in nanjing. it is posed of the nationaldefense education museum, the military arms museum, the british model museum,the national defense science and technology museum, the heavy weapons field, thesimulation exercise field and the military sports entertainment park. the nameof the national defense education museum was inscribed by liu huaqing, formervice chairman of the military mission。 the name of the arms and servicesmuseum was inscribed by chi haotian, minister of national defense。 zhangaiping, jiang weiqing, du ping, xiang shouzhi and other leaders also inscribedthe words for the national defense park.on the right lawn, the monument to the model city of double support wasspecially made by collecting the handwriting of rade deng xiaoping afternanjing won the title of model city of double support in 1993, 1994 and clenching of the two hands symbolizes that the army and the people go handin hand。 she is like a mouth, symbolizing that the army and the people depend oneach other.now, on the second floor of the exhibition hall, we see the newly openedexhibition hall of shenzhou spacecraft. in the hall, the model of shenzhouspacecraft successfully launched and recovered by china is displayed. it isonethird of the original size and is specially made for nanjing by the stateaerospace industry corporation. this is the first public exhibition of shenzhousimulation model in china, which is not easy for ordinary people it39。s model is as like as two peas of shenzhou spacecraft. this time, you can seeand take a photo of yourself. at the same time, a large number of long marchrockets and spacecraft photos and text materials are also displayed in theexhibition hall. this kind of visit is also rare.at the back of the exhibition hall is the most interesting and excitingnewly opened space travel hall. through the largescale dynamic platform andwide screen film specially made by the ministry of space, it uses hightechsound, light, electricity, 3d animation and simulation means to make theaudience vibrate with the seat swing left and right, up and down, and back andforth. with the tacit understanding of the screen vision technology, you canrealistically ride in the spaceship and have a tense and fortable, thrillingand ethereal space ride travel makes you feel personally and unprecedentedly.travel in space, have fun.. please don39。t miss this rare opportunity. you mayas well experience it yourself.