How to describe the hawking?

The example described by Hawking is as follows:

Shouting: This is a common shouting, usually used for street hawking or market vendors. Shouting is usually called by one person or several people to attract customers' attention.

Hawk: This kind of hawking is usually used to attract the attention of distant customers. Shouts are usually loud, and sometimes slogans or slogans are used to express the products or services sold.

Shouting: This kind of shouting is usually used in quiet places, such as shops or restaurants. Calls are usually soft to attract customers' attention and guide them into shops or restaurants.

Salesmanship: this kind of hawking is usually used to promote products or services, emphasizing the advantages or characteristics of products to attract customers' desire to buy. Sales promotion is usually smooth and persuasive.

Oral advertising: this kind of hawking is usually used to promote products or services through oral advertising, emphasizing the uniqueness or advantages of products. Oral advertisements are usually creative and interesting to attract customers' attention.