界首地处黄淮平原，历史上黄河多次南泛夺颖入淮、夺淮入海，在界首颍河两岸留下了大面积的黄色黏土沉积层。这些沉积的粘土，被当地人称为“大胶泥”，也称“黄胶泥”。

Located on the Huanghuai Plain, Jieshou owes its rich pottery tradition to the very earth beneath it. Over centuries, the meandering Yellow River has sculpted this area, sometimes carving new paths southward into the Huai River, leaving behind vast stretches of fertile, yellow clay deposits along the banks of the Ying River. Locally known as "Da Jiaoni" or "Huang Jiaoni" ("Great Sticky Clay" or "Yellow Sticky Clay"), this clay is the soul of Jieshou pottery.

制作彩陶所用的泥料即为沙河沿岸表层土以下2-4米的“大胶泥”。大胶泥土质细腻，有很好的塑性和黏性，烧制过程中不易炸裂，是制作陶器的上好材料。

The clay for Jieshou Colored Pottery is carefully sourced from a depth of 2 to 4 meters below the surface along the Ying River's banks. This deep, fine-grained clay is exceptionally pliable and sticky, making it the perfect medium for artisans. Its unique composition allows it to withstand the intense heat of the kiln without cracking, transforming into pottery that embodies both resilience and beauty. Here, in this land where the river has gifted its finest earth, Jieshou pottery comes to life, carrying the spirit of the soil in every piece.