In my freshman year's work, not long after I entered school at that time, I forgot that even if I washed it overnight after drinking soya-bean milk with a cup, the soya-bean milk residue was air-dried and difficult to clean, and it was not convenient for my fingers to reach the bottom of the cup. At that time, I glanced at the umbrella and suddenly thought that if my cup could be opened and spread out like this, it would be much more. Later, I designed a pile of junk. Then one day it rained and looked at passers-by downstairs with octagonal umbrellas. I suddenly figured it out. I took an umbrella and assumed that the top part was my ideal cup structure. After getting the ideal form, I tried to optimize the structure, process and appearance to reduce the cost as much as possible. After all, what I want is a cup, not an umbrella. A week later, I got the product model in my heart. However, it is a pity that I graduated from college and threw it away when I left because I was too troublesome. Maybe you will ask me why I don't buy a brush to brush cups directly... I think because I am a little obsessed with cleanliness, brushes are prone to bacteria when placed with damp, and I want one more place to place a special cup brush. In addition, the brush is also difficult to clean the residue at the bottom of the cup.

This is the final design plan of my university. Maybe I am more extreme, because I often use cups to soak all kinds of food in the dormitory. The residues of these foods are difficult to remove even if there is a brush after air-drying. For example, the residues of soybean milk powder that have not been completely removed, and milk-soaked fruit cereals.