《智囊(选录)·明智部·陶侃》
又曾挖掘竹子，有一官吏连着竹根挖起，以为竹根部分非常坚硬，可作为竹钉的材料使用。
又尝发所在竹篙，有一官长，连根取之，仍当足。
Another time, he dug up some bamboo. There was an official who dug up the bamboo together with its roots, thinking that the roots were very hard and could be used to make bamboo nails.