《汉书·传·王莽传下》
六月，重新在明堂把象征封国的茅土授予诸侯，说道： 我规划土地制度，封建五等诸侯，根据经典的正文，符合经典的解说，贯通经义的事理，再三思考，再三讨论，自从始建国元年以来到现在快九年了，今天才正式定下来。
六月，更授诸侯茅土于明堂，曰： 予制作地理，建封五等，考之经艺，合之传记，通于义理，论之思之，至于再三，自始建国之元以来九年于兹，乃今定矣。
In June, the thatch and soil symbolizing fiefdoms were bestowed upon the feudal lords again in Mingtang, saying: I plan for the land system and establish five ranks of feudal lords, according to the text of the classics, consistent with the interpretation of the classics, articulating the principles of the classics, pondering repeatedly and discussing repeatedly. It has been almost nine years since the beginning of the founding of the nation, and only today has it been officially finalized.