《易传·序卦传·下篇》
不停的上升，一定有困顿的一天。在上位的受困，一定返回到关注下面，任贤井养其民。井，贤也。
升而不已必困，故受之以《困》。困乎上者必反下，故受之以《井》。
Continuously ascending, there must be a day of trouble. Those who are in high positions and are trapped must return to focus on the people below and appoint the virtuous to cultivate the people. Jing, virtuous.