Shanghai vs Salt

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Shanghai (Chinese: 上海, Shanghainese pronunciation: [zɑ̃̀.hɛ́] (listen), Standard Mandarin pronunciation: [ʂâŋ.xài] (listen)) is one of the four direct-administered municipalities of the People's Republic of China. It is under the direct administration of the State Council of China. The city is located on the southern estuary of the Yangtze, with the Huangpu River flowing through it. With a population of 24.28 million as of 2019, it is the most populous urban area in China and the second most populous city proper in the world. Shanghai is a global center for finance, technology, manufacturing, and transportation, and the Port of Shanghai is the world's busiest container port. Originally a fishing village and market town, Shanghai grew in importance in the 19th century due to trade and its favorable port location. The city was one of five treaty ports forced open to foreign trade after the First Opium War. The Shanghai International Settlement and the French Concession were subsequently established. The city then flourished, becoming a primary commercial and financial hub of the Asia-Pacific region in the 1930s. During the Second Sino-Japanese War, the city was the site of the major Battle of Shanghai. After the war, with the CPC takeover of mainland China in 1949, trade was limited to other socialist countries and the city's global influence declined. In the 1990s, economic reforms introduced by Deng Xiaoping resulted in an intense redevelopment of the city, especially the Pudong New Area, aiding the return of finance and foreign investment.

The city has since re-emerged as a hub for international trade and finance; it is the home of the Shanghai Stock Exchange, one of the largest stock exchanges in the world by market capitalization and the Shanghai Free-Trade Zone, the first free-trade zone in China. Shanghai is classified as an Alpha+(global first tier) city, making it one of the world's Top 10 major cities together with Hong Kong and Beijing in China by the Globalization and World Cities Research Network. Shanghai is a global financial center, ranking first in Asia and third globally (after New York and London) in the Global Financial Centres Index.Shanghai is an international center of research and development and is ranked 5th globally and 2nd in Asia (after Beijing which ranks 1st globally) by scientific research, as tracked by the Nature Index. The city is home to highly ranked institutions in Asia and the world such as Fudan University, Shanghai Jiao Tong University, Tongji University, and East China Normal University. Shanghai has been described as the "showpiece" of the booming economy of China. Featuring several architecture styles such as Art Deco and shikumen, the city is renowned for its Lujiazui skyline, museums and historic buildings—including the City God Temple, Yu Garden, the China Pavilion and buildings along the Bund. Shanghai is also known for its sugary cuisine, distinctive dialect and vibrant international flair. Every year, the city hosts numerous national and international events, including Shanghai Fashion Week, the Chinese Grand Prix and ChinaJoy.

Source: Wikipedia

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Salt is a mineral composed primarily of sodium chloride (NaCl), a chemical compound belonging to the larger class of salts; salt in its natural form as a crystalline mineral is known as rock salt or halite. Salt is present in vast quantities in seawater, where it is the main mineral constituent. The open ocean has about 35 grams (1.2 oz) of solids per liter of sea water, a salinity of 3.5%. Salt is essential for life in general, and saltiness is one of the basic human tastes. Salt is one of the oldest and most ubiquitous food seasonings, and salting is an important method of food preservation. Some of the earliest evidence of salt processing dates to around 6,000 BC, when people living in the area of present-day Romania boiled spring water to extract salts; a salt-works in China dates to approximately the same period. Salt was also prized by the ancient Hebrews, the Greeks, the Romans, the Byzantines, the Hittites, Egyptians, and the Indians. Salt became an important article of trade and was transported by boat across the Mediterranean Sea, along specially built salt roads, and across the Sahara on camel caravans. The scarcity and universal need for salt have led nations to go to war over it and use it to raise tax revenues. Salt is used in religious ceremonies and has other cultural and traditional significance.

Salt is processed from salt mines, and by the evaporation of seawater (sea salt) and mineral-rich spring water in shallow pools. Its major industrial products are caustic soda and chlorine; salt is used in many industrial processes including the manufacture of polyvinyl chloride, plastics, paper pulp and many other products. Of the annual global production of around two hundred million tonnes of salt, about 6% is used for human consumption. Other uses include water conditioning processes, de-icing highways, and agricultural use. Edible salt is sold in forms such as sea salt and table salt which usually contains an anti-caking agent and may be iodised to prevent iodine deficiency. As well as its use in cooking and at the table, salt is present in many processed foods. Sodium is an essential nutrient for human health via its role as an electrolyte and osmotic solute. Excessive salt consumption may increase the risk of cardiovascular diseases, such as hypertension, in children and adults. Such health effects of salt have long been studied. Accordingly, numerous world health associations and experts in developed countries recommend reducing consumption of popular salty foods. The World Health Organization recommends that adults should consume less than 2,000 mg of sodium, equivalent to 5 grams of salt per day.

Source: Wikipedia