2, the essence of laughter is the most common among the six conventional smiles. The first four are more common and the most popular are smiles.

In all kinds of smiles, smile is the most natural and generous, and the most sincere and friendly.

It is recognized by all nations in the world.

If the essence of joking is confidence, enthusiasm and friendliness, then it will be fully and fully reflected in the smile.

Smile is the basic requirement of politeness.

In social occasions, smiling can make people relaxed, like spring breeze.

Because of this, a smile is regarded as a "passport to social interaction" and is also called a basic smile or regular expression.

In a word, smiling can at least play the role of the above aspects.

(1) he has a good mood and a sincere smile when he is calm, cheerful, mentally normal, well treated and optimistic.

(2) a person who is full of self-confidence, who is only humble and confident, will be truly accepted by others in interpersonal communication.

Smiling people often show that they are confident in their abilities and charisma.

(3) he is sincere and friendly. He smiles and shows his good heart. He is honest and honest, sincere and friendly.

(4) the performance of the music industry is a smile on the job. It shows that you love your job and are willing to fulfill your duties and work hard.