When I was a child, the bags of drinks we drank were called Xuebao, but I don't know if there are some with a light rain sign. Who can tell me where there are pictures and I'll send them!
It was a wonderful memory. When we were in primary school, we liked to call it "stone". We couldn't finish eating it from home to school, or we bit it and put it in our mouth. Sometimes I secretly lick it in class. At that time, I only knew that the ice was so sweet and delicious. We seldom buy anything that doesn't freeze.
If you have pictures, you can also send them to me. Thank you!