As early as the Han Dynasty was just established, there were signs of official corruption. Zhang Cang, the prime minister in the early Han Dynasty, lived 100 years before his death, but his so-called secret of health preservation was to drink human milk.

In BC 176, Zhang Cang was 80 years old when he resigned as prime minister. In this era of material scarcity, 80 years old is hard to come by.

At this time, Zhang Cang was still too old, and almost all the teeth in his mouth fell off. The only food that can be swallowed is milk. In order to ensure the continuation of life, Zhang Cang looked around for some women to nurse him.

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Zhang Cang achievements

Zhang Cang, a famous figure in the Western Han Dynasty recorded in Sima Qian's Thirty-six Biographies of Prime Minister Zhang in Historical Records, served as Prime Minister for more than ten years, with a long term and a rare history. Zhang Cang was born in 256 BC and died in 152 BC at the age of 104. Zhang Cang is a very knowledgeable person, proficient in calendar, temperament and mathematics. We can judge Zhang Cang from the present perspective.

Zhang Cang is an auxiliary corrector of Nine Chapters Arithmetic, an ancient Chinese mathematical classic. In Nine Chapters of Arithmetic, * * * recorded 246 math problems, many of which were applied by Zhang Cang to the national economy and people's livelihood. Zhang Cang's erudition comes not only from the teaching of the famous teacher Xunzi, but also from his own efforts. According to historical records, Zhang Cang loved reading and read widely.

Baidu Encyclopedia-Zhang Cang