1, pressing method: used when the sales are not good or there is no passenger flow, and the success rate is grasped with the only passenger flow.

2. Enthusiasm method: it is a commonly used method, which is suitable for most customer groups, especially old customers.

3. Cold method: It can be used for customers who are very opinionated or don't talk. Cold means that the language is just right, not the expression and tone are cold, so we should strengthen the body service when using it.