《明史·列传·卷一百八十六》
外族方氏建立义学，请四方游学之士来任教，恒年幼时便上这义学学习儒家经典，很快就能领悟其中心思想。
外族方氏建义塾，馆四方游学士，恒幼往受诸经，辄领其旨要。
When the foreign Fang family established a free school, they invited scholars from afar to come and teach. Heng began studying Confucian classics at this free school at a young age, and was quickly able to grasp their core ideas.