“封龙三老”是金元时期的诗人和名宦，三人关系密切。“三老”中的元、李二人在真定路所辖封龙书院授徒讲学，白朴、李文蔚等是其学生，侯克中、史樟等亦与之交。“三老”与真定路及当时北方许多军政大员来往密切，这为他们身边学生进入仕途、得交显宦创造了条件。真定元曲作家较少怨世、愤世之作，便与他们交往的人物和生活的环境大有关系。 “Dragon Three” is the poet and celebrity of Jin and Yuan Dynasties, the three are closely related. The “three old” yuan, Li two people in the Ding Road, under the jurisdiction of the Academy granted lectures lectures, Bai Pu, Li Wenwei is its students, such as Hou Ke, Shi Zhang also pay with it. The “three seniors” had close ties with Zhending Road and many military and government officials in the north at that time. This created the conditions for the students around them to enter the career path. Genuine Yuanqu writers less resentment, cynicism, then they interact with the characters and living environment has a lot to do.