How much is the refund if you leave the group 15 days before traveling abroad with the group?

See if you leave the country or stay at home. Take the domestic tourism contract in Guangdong Province as an example: notify the tour group more than 4 days in advance. Deduct 5% penalty.

Except for this 5% fine. And all kinds of fees paid by travel agencies for your trip can't be cancelled. Such as transportation, booking and so on. You can find a travel agency to verify this.

Your days are eight. In practice, it is basically a means of transportation in China, especially the possibility of deducting air tickets and train tickets. In addition to air tickets, hotel fees may be deducted.

All of the above can be discussed, and you need to communicate with the travel agency.