Okay kiddo, so let's talk about mdpi (pronounced em-dee-pee-eye) in a scientific way, but explained like you're five years old.
MDPI stands for Multidisciplinary Digital Publishing Institute, which is a fancy way of saying they publish science papers! You know how you draw and write things at school? Well, scientists also draw and write things, but it's about things they discover from experiments.
Now, mdpi is special because they don't just publish papers on one topic, like animals or space, but on many different topics. This is why they say they're multidisciplinary. Just like how you know many different things like how to count, your colors, and your ABCs, scientists know many different things about many different subjects.
So, why is this important? Well, sometimes scientists make discoveries in one subject that can also help in another subject. For example, if a scientist discovers something about how plants grow, it might also help people who study how to grow food for us to eat!
MDPI helps share all this information between scientists, so they can learn from each other and work together to make even bigger discoveries.
Does that make sense, kiddo?