《明史·列传·卷二十四》
太祖忧虑郊社诸祭，坛没有屋檐遮盖，有时突然下雨会淋湿衣服。
帝虑郊社诸祭，坛而不屋，或骤雨沾服。
The Founding Emperor was worried about the suburbs and society sacrifices, the altars had no eaves to cover, sometimes it will rain suddenly and wet clothes.