If Wangfujing buys enough 100 yuan, you can apply for a membership card (ID card is required) and get a 10% discount on the next book purchase.

Zhongguancun Book Building can get a 20% discount for one yuan membership card.

When Xidan arrives in 300 yuan on the same day, you can apply for a membership card, with a discount of 8.5% for points below 1000, 10% for points above 1000 and 8.8% for points above 3,000 (this is the highest discount).

Compare it yourself.