The fourth ancestor Wu Fu (945-1025), was praised for being industrious and thrifty. He was a good manager of the household and had the refined manners of a sage. Once a merchant named Yan from Fujian Province deposited several thousand taels of silver in the Wu family house. The merchant did not demand the money back for a long time, so Wu Fu lent it to poor villagers, donated money for charitable works, and even obtained a handsome profit from the capital. Many years later, when the merchant came to take the money back, Wu Fu gave him both the principal and the interest. However, the merchant Yan respectfully declined to take the interest, and in the end the two turned to the local judge for a decision. The judge decided that the merchant should take the principal and that the interest should be divided equally between the two men. However, Wu Fu again refused to take his portion and donated it to the Tianning Temple (Heavenly Peace Temple).