currency unit (esp. Chinese yuan) / first / original / primary / fundamental / constituent / part / era (of a reign) / meta- (prefix) / (math.) argument / variable / (Tw) (geology) eon

CE (Common Era) / Christian Era / AD (Anno Domini)

unit (forming an entity) / element / (in a residential building) entrance or staircase

poly- / multi- / multielement / multivariant / multivariate (math.)

surname Yuan / the Yuan or Mongol dynasty (1279-1368)

single variable (math.) / univariate

calendar era / epoch

character (computing) (Tw)

duality / dual / bipolar / binary

(old) first place in civil service examinations at three levels: provincial 解元, metropolitan 會元｜会元 and palace 狀元｜状元

(Tw) Christian era / Gregorian calendar / AD (Anno Domini)

time immemorial / origin of the universe / the world

euro (currency)

top scorer in the palace examination (highest rank of the Imperial examination system) / see 榜眼 and 探花 / top scorer in college entrance examination 高考 / (fig.) the most brilliantly talented person in the field / leading light

bit (computing)

to change an emperor's or ruler's reign title (old)

New Age (movement)

new era / new epoch

Ghost Festival on 15th day of 7th lunar month when offerings are made to the deceased

Tang emperor Xuanzong's 唐玄宗 reign name used during the Kaiyuan era (713-741), a peak of Tang prosperity

scholar-official in the Qing dynasty (1764-1849)

two-dimensional / the fictional worlds of anime, comics and games

identity element (math.)

Guangyuan prefecture-level city in Sichuan

Qingyuan county in Lishui 麗水｜丽水, Zhejiang

Li Boyuan or Li Baojia 李寶嘉｜李宝嘉 (1867-1906), late Qing journalist, novelist and social observer, author of Observations on the current state of officialdom 官場現形記｜官场现形记

variant of 復原｜复原

American dollar / US dollar

provincial imperial examination graduate who ranked 1st in metropolitan examination (in Ming and Qing dynasties)

(computing) wildcard character (Tw)

brightest and best / chief / first among peers

to win the top award / to come first in the examination rankings

Song Dynasty History of Zen Buddhism in China (1252), 20 scrolls

(old) to rank first in the imperial examinations at the provincial capital, the national capital and the palace successively / (sports etc) to achieve three successes in a row (three matches in a row, three goals in a match etc)

flat silver (former coinage) / also written 銀圓｜银圆 / silver dollar

neuron

lit. in every trade, a master appears (idiom); fig. You can produce outstanding achievements in any task, provided you put it enough love and diligence

first-placed candidate in the provincial imperial examinations (old)

32-bit (computing)

64-bit (computing)

8-bit (computing)

kilobit

dimension (loanword, from Japanese)

Australian dollar

Hong Kong dollar

kyat, currency of Myanmar

Won (Korean currency)

three-dimensional / the real world (cf. 二次元)

indeterminate element (math.), often denoted by x

interneuron

renminbi yuan (RMB), PRC currency unit

pixel (remote sensing imagery)

gigabit

16-bit (computing)

Epoch Times, US newspaper

Yao Wenyuan (1931-2005), one of the Gang of Four

Cui Yongyuan (1963-), TV presenter

Japanese yen (unit of currency) / also written 日圓｜日圆

finite element (method)

finite element (method)

Liu Zongyuan (773-819), Tang essayist and poet, advocate of the classical writing 古文運動｜古文运动 and neoclassical 復古｜复古 movements

modular unit

elimination (math) / to eliminate one variable from equations

(math.) argument / variable