How was Qingbai ware made and why?

Well there is not a real reason to "why" qingbai ware was made. Rather, people most likely wanted different pottery that would be more versatile or durable. Qingbai was easy for common people to use and produce. People could wash it easily and could cook their food in in Qingbai easily without having the pottery break. Also, qingbai was another variation in color that had a blueish or sometimes white-like color. Qingbai's are usually made in kilns which are like huge mounds of ovens to bake pottery. Qingbai is also used for aesthetics uses as one can make pottery into vases and other materials.