Uranium uses the symbol U since 1963.
Wu Jiaji -LRB- , 1618 -- 1684 -RRB- was a Chinese poet , and an associate of the official and literary figure Zhou Lianggong .. Chinese. China. poet. Chinese poetry. Zhou Lianggong. Zhou Lianggong. Wu 's writings provide us with a glimpse of conditions just prior to the Manchu Qing conquest and especially descriptions of social conditions in rural society .. Manchu. Manchu. Qing. Qing Dynasty. Wu was from Taizhou , Jiangsu , an area already known for radical intellectualism .. The area had once experienced economic prosperity , but by the 17th century was in decline .. Wu lived in the midst of poverty in a dilapidated home with broken tiles .. Members of the local community still attempted to uphold old standards of education and culture .. The area was one of salt production and Wu 's ancestors engaged in this profession .. Wu himself engaged in variety of occupations .. It is popular to view Wu , and others of his station , as hermits in protest against the newly established Manchu regime .. Manchu. Manchu. Wu 's accounts of China 's new masters on a local level are of course revealing .. Among Wu 's associates were seal carvers who came to the attention of the scholar Zhou .. Zhou would publish a collection of their biographies , the Yinren Zhuan .