The paper cup is a common item in daily life. Do you know its historical source?

Paper cups are paper made from disposable cups and are often lined or coated with plastic or wax to prevent liquid leakage or soak through the paper. It can be made from recycled paper and is widely used around the world. There are records of paper cups in our country, and paper was invented in the second century BC. Paper cups are used to supply tea. They are constructed in different sizes and colors and decorated with decorative designs. The paper evidence of the paper cup appears in the description of the belonging of the Yu family from Hangzhou.