The charging standards are as follows:
1. Puka:
The annual fee of the main card is 180 yuan, and the supplementary card is in 90 yuan every year.
2. Gold card:
The annual fee of the main card is 360 yuan, and the annual fee of the auxiliary card is 180 yuan.
3. Platinum card and above:
The annual fee is 3600 yuan from 360 yuan and 680 yuan, depending on the type of card.