Question: What is the highest elevation in the place with a large amount of contacts during Yuan with the country of the person able to describe the process of evaporation?

Tibet (i/tᵻˈbɛt/; Wylie: Bod, pronounced [pʰø̀ʔ]; Chinese: 西藏; pinyin: Xīzàng) is a region on the Tibetan Plateau in Asia. It is the traditional homeland of the Tibetan people as well as some other ethnic groups such as Monpa, Qiang and Lhoba peoples and is now also inhabited by considerable numbers of Han Chinese and Hui people. The highest elevation in Tibet is Mount Everest, earth's highest mountain rising 8,848 m (29,029 ft) above sea level. Tibet is the highest region on Earth, with an average elevation of 4,900 metres (16,000 ft). <SEP> with the introduction of the blast furnace to europe in the middle ages, pig iron was able to be produced in much higher volumes than wrought iron. because pig iron could be melted, people began to develop processes of reducing the carbon in the liquid pig iron to create steel. puddling was introduced during the 1700s, where molten pig iron was stirred while exposed to the air, to remove the carbon by oxidation. in 1858, sir henry bessemer developed a process of steel-making by blowing hot air through liquid pig iron to reduce the carbon content. the bessemer process was able to produce the first large scale manufacture of steel. once the bessemer process began to gain widespread use, other alloys of steel began to follow. mangalloy, an alloy of steel and manganese exhibiting extreme hardness and toughness, was one of the first alloy steels, and was created by robert hadfield in 1882. <SEP> the yuan undertook extensive public works. among kublai khan's top engineers and scientists was the astronomer guo shoujing, who was tasked with many public works projects and helped the yuan reform the lunisolar calendar to provide an accuracy of 365.2425 days of the year, which was only 26 seconds off the modern gregorian calendar's measurement. road and water communications were reorganized and improved. to provide against possible famines, granaries were ordered built throughout the empire. the city of beijing was rebuilt with new palace grounds that included artificial lakes, hills and mountains, and parks. during the yuan period, beijing became the terminus of the grand canal of china, which was completely renovated. these commercially oriented improvements encouraged overland and maritime commerce throughout asia and facilitated direct chinese contacts with europe. chinese travelers to the west were able to provide assistance in such areas as hydraulic engineering. contacts with the west also brought the introduction to china of a major food crop, sorghum, along with other foreign food products and methods of preparation. <SEP> Wang Chong (; 27 – c. 100 AD), courtesy name Zhongren (仲任), was a Chinese meteorologist, astronomer, and philosopher active during the Han Dynasty. 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. His main work was the "Lunheng" (論衡, "Critical Essays"). 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. Wang also accurately described the process of the water cycle. <SEP> Han-era astronomers adopted a geocentric model of the universe, theorizing that it was shaped like a sphere surrounding the earth in the center. Although others disagreed with his model, Wang Chong accurately described the water cycle of the evaporation of water into clouds. They assumed that the Sun, Moon, and planets were spherical and not disc-shaped. 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. <SEP> Other historians also assert that these Ming titles were nominal and did not actually confer the authority that the earlier Yuan titles had. Van Praag writes that the "numerous economically motivated Tibetan missions to the Ming Court are referred to as 'tributary missions' in the Ming Shih." Van Praag writes that these "tributary missions" were simply prompted by China's need for horses from Tibet, since a viable horse market in Mongol lands was closed as a result of incessant conflict. The late Turrell V. Wylie, a former professor of the University of Washington, and Li Tieh-tseng argue that the reliability of the heavily censored History of Ming as a credible source on Sino-Tibetan relations is questionable, in the light of modern scholarship. Morris Rossabi also writes that "Tibet, which had extensive contacts with China during the Yuan, scarcely had diplomatic relations with the Ming."