《北史·列传·卷六十二》
郭衍就选土地肥沃的地方，驻扎军队开荒种地作为军饷，每年收获粮食一万多石，免除了人们转运粮草的劳苦。
衍乃选沃饶地，置屯田，岁嬴万余石，人免转输之劳。
Guo Yan chose a place with fertile land to garrison troops to reclaim wasteland to farm as military supplies, and harvested more than 10,000 shi of grain each year, eliminating the burden on the people of transporting grain and fodder.