Traditional Culture Encyclopedia - Hotel accommodation - What does it mean that the number of new users in Meituan Hotel exceeds 150 minus 20?

What does it mean that the number of new users in Meituan Hotel exceeds 150 minus 20?

New users of Meituan 150 or above, free of 20. This means that if you buy a room above 150 yuan in Meituan, you should deduct 20 yuan from the original price.

For example:

Suppose the room costs £ 200.

Then you only need to pay 180 yuan to buy this room!

200-20= 180 yuan