Fan Zhongyan made his family charity un-spendable so it could never run out

In Song-dynasty China, an official like Fan Zhongyan supporting his extended clan's poorer members faced the same problem any family or individual charity faces: a direct cash gift solves the immediate need and then is simply gone, with no mechanism to keep helping the next relative who falls on hard times, or the one after that, across generations the giver won't live to see. Relying on each generation's wealthier members to voluntarily keep giving left the whole system dependent on individual generosity being renewed indefinitely.

Setting aside a large sum of money as a permanent fund had the same weakness cash gifts did: money can be spent, borrowed against, mismanaged or simply divided up among descendants until nothing meaningful remains. What was needed was a form of charitable capital that couldn't be spent even if a future steward wanted to spend it.

In 1049, Fan Zhongyan purchased roughly 1,000 mu (about 165 acres) of farmland near Suzhou and established it as permanently inalienable clan property — legally barred from being sold, mortgaged or divided — with the rental income alone, not the land itself, funding grain, clothing, weddings, funerals and education for poorer clan members under a detailed charter, the Yizhuang Guiju, that he drafted in 1050 and left his descendants free to amend but not to dissolve.

Converted the gift into farmland legally barred from sale, mortgage or division, so only the rental income, never the land itself, could fund clan members.

Land legally barred from sale or division cannot be liquidated by future stewards.

Only rental income was distributed, preserving the principal as a permanent source.

The charter was binding yet amendable, allowing flexibility without risking the capital.

The protected asset survived political changes, growing through additional donations.

To make a gift permanent, convert it into an income-producing asset that cannot be sold or divided, so only the income is ever spent.

The estate survived dynastic collapse, war and centuries of family succession; by the late Qing dynasty the clan's charitable landholding had grown to roughly 5,300 mu through further donations by descendants, and the institution reportedly continued operating for around 900 years, into the Republican era.