Green vs Hanoi

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Green is the color between blue and yellow on the visible spectrum. It is evoked by light which has a dominant wavelength of roughly 495–570 nm. In subtractive color systems, used in painting and color printing, it is created by a combination of yellow and blue, or yellow and cyan; in the RGB color model, used on television and computer screens, it is one of the additive primary colors, along with red and blue, which are mixed in different combinations to create all other colors. By far the largest contributor to green in nature is chlorophyll, the chemical by which plants photosynthesize and convert sunlight into chemical energy. Many creatures have adapted to their green environments by taking on a green hue themselves as camouflage. Several minerals have a green color, including the emerald, which is colored green by its chromium content. During post-classical and early modern Europe, green was the color commonly associated with wealth, merchants, bankers and the gentry, while red was reserved for the nobility. For this reason, the costume of the Mona Lisa by Leonardo da Vinci and the benches in the British House of Commons are green while those in the House of Lords are red.

It also has a long historical tradition as the color of Ireland and of Gaelic culture. It is the historic color of Islam, representing the lush vegetation of Paradise. It was the color of the banner of Muhammad, and is found in the flags of nearly all Islamic countries.In surveys made in American, European, and Islamic countries, green is the color most commonly associated with nature, life, health, youth, spring, hope, and envy. In the European Union and the United States, green is also sometimes associated with toxicity and poor health, but in China and most of Asia, its associations are very positive, as the symbol of fertility and happiness. Because of its association with nature, it is the color of the environmental movement. Political groups advocating environmental protection and social justice describe themselves as part of the Green movement, some naming themselves Green parties. This has led to similar campaigns in advertising, as companies have sold green, or environmentally friendly, products. Green is also the traditional color of safety and permission; a green light means go ahead, a green card permits permanent residence in the United States.

Source: Wikipedia

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Hanoi (UK: ha-, hə-NOY or US: hah-NOY; Vietnamese: Hà Nội [hàː nôjˀ] (listen)) is the capital city of Vietnam. It covers an area of 3,358.6 km2 (1,296.8 sq mi). It is the second largest city in Vietnam, with over eight million residents within the city proper and an estimated population of 20 million within the metropolitan area. Located in part of the Red River Delta, Hanoi is the commercial, cultural, and educational centre of Northern Vietnam. Having an estimated nominal GDP of US$32.8 billion as of 2018, it is the second most productive economic area of Vietnam, after Ho Chi Minh City. The city is a settlement along the banks of the Red River. In 257 B.C, under the rule of king An Dương Vương, the citadel of Cổ Loa, nowaday Đông Anh district of Hanoi, was constructed and served as the capital of Âu Lạc. After the fall of Âu Lạc, the city was renamed to Tống Bình and ultimately Đại La. In 1010, emperor Lý Thái Tổ moved the capital to Đại La, renaming it Thăng Long (literally "Ascending Dragon"). Thăng Long would remain the political and cultural centre of the state of Đại Việt until 1802, when the Nguyễn dynasty, the last imperial dynasty of Vietnam, moved the capital to Huế.

The city renamed to Hanoi in 1831, and was the capital of French Indochina from 1883 to 1945. On 6 January 1946, the National Assembly of the Democratic Republic of Vietnam designated Hanoi as the capital of the newly-independent country, which would last during the First Indochina War (1946–1954) and the Vietnam War (1955–1975). Hanoi has been the capital of the Socialist Republic of Vietnam since 1976. Historically it had Chinese, French and Russian influences. It hosts various venerable educational institutions and cultural venues of significance, including the Vietnam National University, the Mỹ Đình National Stadium, and the Vietnam National Museum of Fine Arts. On 16 July 1999, the UNESCO presented the title "City for Peace" to Hanoi. Hanoi joined UNESCO's Network of Creative Cities as a Design City on 31 October 2019 on the occasion of World Cities' Day.

Source: Wikipedia