Besides describing the number of people or things, the three can also extend the meaning of describing the feelings between people in language. For example, the three of us can be used to describe the scene of two good friends walking and chatting on the road, or the picture of a couple walking by the sea. As you can imagine, under these circumstances, the feelings between two people are relaxed and happy.
The phrase "3322" can also be used to describe a soft and intuitive scene. For example, the three of us can be used to describe the park under the setting sun before dusk, or the use of the word fresh and pleasant air after heavy rain makes people feel very comfortable and has a small fresh taste.