The thirty-fifth year of the sixty-year sexagenary cycle, such as 1898, 1958, or 2018.

The fifth year of the sixty-year cycle, representing a combination of the fifth heavenly stem [[戊|戊|wu4]] and the fifth earthly branch [[辰|辰|chen2]].

The 15th year of the 60-year sexagenary cycle, such as 1938, 1998, or 2058.

the fifty-fifth year of the sixty-year sexagenary cycle, such as 1918, 1978, or 2038

The 45th year of the 60-year sexagenary cycle, such as 1908, 1968, or 2028.

The twenty-fifth year of the sexagenary cycle, occurring every sixty years.

A failed attempt to reform the Qing dynasty in 1898 led by Kang Youwei and Liang Qichao; it lasted 103 days before being crushed by conservative forces led by Empress Dowager Cixi.

any monosaccharide with five carbon atoms in the molecule

isoprene; a colorless volatile liquid hydrocarbon used as a chemical raw material, especially in the manufacture of synthetic rubber

(loanword) a barbiturate drug used as a sedative or sedative-hypnotic; known as "qīng fā" in Taiwan

A type of synthetic rubber made from [[异戊二烯|異戊二烯|yi4 wu4 er4 xi1]]; while its properties are closer to natural rubber than other synthetics, it surpasses natural rubber in water resistance and insulation.

any of several five-carbon sugar alcohols having the formula C5H12O5

tebuconazole; a broad-spectrum fungicide used in agriculture to treat various fungal diseases in crops

a type of liver inflammation caused by the hepatitis E virus; usually transmitted through contaminated water or food

(literary) the predawn hours between 3:00 a.m. and 5:00 a.m.; the fifth of the five traditional night watches

a barbiturate drug used as a sedative and anesthetic; also known by the trade name pentobarbital sodium

The six martyrs of the failed 1898 [[戊戌变法|戊戌變法|wu4 xu1 bian4 fa3]] who were executed for their roles in the movement, including [[谭嗣同|譚嗣同|tan2 si4 tong2]], [[林旭|林旭|lin2 xu4]], [[杨深秀|楊深秀|yang2 shen1 xiu4]], [[刘光第|劉光第|liu2 guang1 di4]], [[康广仁|康廣仁|kang1 guang3 ren2]], and [[杨锐|楊銳|yang2 rui4]]

The 1898 coup d'état led by Empress Dowager [[慈禧太后|慈禧太后|ci2 xi3 tai4 hou4]] that ended the Hundred Days' Reform and led to the house arrest of the Guangxu Emperor

Hundred Days Reform (1898); a failed attempt to modernize the government and social systems of the Qing dynasty.

amyl alcohol; pentyl alcohol

cyclopentene; a chemical compound consisting of a ring of five carbon atoms with the formula C5H8