What is machine intelligence?

This semester I have taken my boss's machine intelligence course again. I have listened more seriously this time than in the previous two years. I took the first class and learned more about what machine intelligence is, let's make a summary here. I will write down the following:

1: What is intelligence
Intelligence is a kind of ability to know what to learn, where to learn, understand, and interact with the environment. Simply put, intelligence is a kind of capability.

2: Where does intelligence come from?
Intelligence comes from the brain. It is a behavior, or a capability, which is related to neuron cells.

3: What is machine intelligence?
Is to make the machine have this capability

It is not hard to understand that intelligence is related to neuron cells in order to allow machines to be intelligent. Therefore, we need to understand the working principles of neurons, and then let these principles be implemented with computing and development, then put it into the machine, and then the machine will be smart. So what we need to study is the working mechanism of neuron cells.

For details about the structure of neuron cells, I will not talk about it for the moment. I think everyone knows it very well in the high school textbooks. The above passage gives you a brief understanding of what machine intelligence is.