What is small data? Small data is individualized data, digital information about each of us. For example, I drink one or two glasses of wine every day, and suddenly one day I have a stomach ache after drinking wine, and I think, what's the difference between this day and the previous one? It turns out that the wine I drank that day was a new brand, and I probably had a stomachache because I drank this new brand of wine. This is the "small data" of my life, which is not as vast and complicated as the big data, but is crucial to me.

I hope my answer is helpful.