The Tomb of Zhang Cang is located in Rengudui Village, 3 kilometers east of downtown Yuanyang County, Xinxiang City, Henan Province. The tomb compound covers over 1,000 square meters, with the burial mound rising 2 meters above the ground. Standing before the mound is a stone stele erected during the Kangxi reign of the Qing Dynasty, inscribed with "Tomb of Zhang Cang, Marquis of Beiping of the Han Dynasty".

Zhang Cang was a native of Zhangdafuzhai in present-day Yuanyang County, Xinxiang City, Henan Province — the village got its name because Zhang Cang once held the official post of Censor-in-Chief. Born in the late Eastern Zhou Dynasty, he served as a Palace Censor under the Qin Dynasty. In the early Western Han Dynasty, he rendered meritorious service suppressing the rebellion of Zang Tu, King of Yan, while acting as the prime minister of a vassal state. For this achievement, Emperor Gaozu Liu Bang enfeoffed him as Marquis of Beiping.

When Xiao He held the position of Prime Minister, Zhang Cang, renowned for his thorough command of national archives, household census records and expertise in calendars and metrology, joined the prime minister’s mansion as a marquess. He ascended to the post of Prime Minister during the reign of Emperor Wen of the Han Dynasty and served for fifteen years, living to over a hundred years old. He passed away in the 5th year of Emperor Jing’s reign (152 BC).

A distinguished statesman, Zhang Cang advocated encouraging agriculture as the fundamental pillar of the nation and promoted agricultural development, playing a pivotal role in the prosperous era known as the "Rule of Wen and Jing". He was also an expert on legal calendars and mathematics, who formulated calendar systems and uniform standards for weights and measures for the Western Han court.

He revised, supplemented and proofread The Nine Chapters on the Mathematical Art, an ancient Chinese text covering classical arithmetic, algebra and geometry. This work occupies a vital position in the history of Chinese science and made remarkable contributions to the global development of mathematics.