Question: Who is the son of the national leader during the Tiananmen Square protests of 1989 in the country where the person who described the process of evaporation lived?

<P0-S0> Party and government leaders Name Position (s) in 1989 Deng Xiaoping Chairman of the Central Military Commission; de facto ``paramount leader ''Chen Yun Chairman of the CPC Central Advisory Commission Zhao Ziyang General Secretary of the Communist Party of China First Vice-Chairman of the Central Military Commission Li Peng Premier of the People's Republic of China Qiao Shi Secretary of the CPC Central Commission for Discipline Inspection Secretary of the CPC Political and Legislative Affairs Committee Hu Qili First Secretary of the Secretariat of the Communist Party Yao Yilin First Vice Premier of the People's Republic of China Yang Shangkun President of the People's Republic of China Vice-Chairman of the Central Military Commission Li Xiannian Chairman of the Conference National Committee Wan Li Chairman of the Congress Standing Committee Wang Zhen Vice President of the People's Republic of China Jiang Zemin Communist Party Shanghai Municipal Secretary Li Ximing Communist Party Beijing Municipal Secretary Zhu Rongji Mayor of Shanghai Chen Xitong Mayor of Beijing Hu Jintao Communist Party Tibet Regional Secretary Wen Jiabao Chief of the General Office of the Communist Party of China Bold text indicates membership in the Politburo Standing Committee Italics text indicates Great Eminent Officials <SEP> <P1-S0> Han-era astronomers adopted a geocentric model of the universe, theorizing that it was shaped like a sphere surrounding the earth in the center. <P1-S1> They assumed that the Sun, Moon, and planets were spherical and not disc-shaped. <P1-S2> They also thought that the illumination of the Moon and planets was caused by sunlight, that lunar eclipses occurred when the Earth obstructed sunlight falling onto the Moon, and that a solar eclipse occurred when the Moon obstructed sunlight from reaching the Earth. <P1-S3> Although others disagreed with his model, Wang Chong accurately described the water cycle of the evaporation of water into clouds. <SEP> <P2-S0> rolf jähnichen joined the christian democratic union (east germany) in 1981. <P2-S1> (unlike its west german counterpart, the east german cdu, as part of the country's national front alliance was effectively controlled by the country's ruling sed party.) <P2-S2> between 1984 and 1989 jähnichen was a member of the local council in his hometown of , on the edge of leipzig. <P2-S3> between 1989 and 1990 he was a member of the cdu party executive. <SEP> <P3-S0> the events of the full - blown revolution began in poland in 1989 and continued in hungary, east germany, bulgaria, czechoslovakia and romania. <P3-S1> one feature common to most of these developments was the extensive use of campaigns of civil resistance, demonstrating popular opposition to the continuation of one - party rule and contributing to the pressure for change. <P3-S2> romania was the only eastern bloc country whose people overthrew its communist regime violently. <P3-S3> protests in tiananmen square (april to june 1989) failed to stimulate major political changes in china, but influential images of courageous defiance during that protest helped to precipitate events in other parts of the globe. <P3-S4> on 4 june 1989 the trade union solidarity won an overwhelming victory in a partially free election in poland, leading to the peaceful fall of communism in that country in the summer of 1989. hungary began (june 1989) dismantling its section of the physical iron curtain, leading to a exodus of east germans through hungary, which destabilised east germany. <P3-S5> this led to mass demonstrations in cities such as leipzig and subsequently to the fall of the berlin wall in november 1989, which served as the symbolic gateway to german reunification in 1990. <SEP> <P4-S0> Deng Pufang () (born 16 April 1944) is the first son of China's former Paramount leader Deng Xiaoping. <P4-S1> He is mostly known for being crippled by the Red Guards and becoming a paraplegic. <P4-S2> He has since dedicated his life to improving the rights of people with disabilities. <SEP> <P5-S0> Wang Chong (; 27 – c. 100 AD), courtesy name Zhongren (仲任), was a Chinese meteorologist, astronomer, and philosopher active during the Han Dynasty. <P5-S1> He developed a rational, secular, naturalistic and mechanistic account of the world and of human beings and gave a materialistic explanation of the origin of the universe. <P5-S2> His main work was the "Lunheng" (論衡, "Critical Essays"). <P5-S3> This book contained many theories involving early sciences of astronomy and meteorology, and Wang Chong was even the first in Chinese history to mention the use of the square-pallet chain pump, which became common in irrigation and public works in China thereafter. <P5-S4> Wang also accurately described the process of the water cycle.