file name :金匮方歌括——陈修园
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Payment Method:
1、Open Tittle
2、Click to Pay New
3、Click on the material you want to buy
4、Click on "Payment Methods"
5、Click on the material you want to buy
6、Choose from one of your existing payment methods or add a new one
7、Complete purchase
NOTE: If you add a payment method when making a purchase, it will be saved in your account.