How buying a PDF works
Every entry in this archive can be downloaded as a printable PDF. Payment is per article, there is no subscription, and access is permanent once you have paid.
Step 1 — Read the preview (no account needed)
Each article opens with a free preview: the process summary, the ingredient ratios and the critical temperature or timing windows. If the preview already gives you what you need, stop there — nothing is charged.
Step 2 — Register (free)
Create a free member account. Only members can top up and unlock articles, so registration is required before you can pay. It takes a moment and needs a working e-mail address so we can reach you about an order.
Step 3 — Top up your wallet (US dollars → credits)
Your wallet is denominated in US dollars. You top up once, then spend the resulting credits per article. When we confirm the payment, the amount is automatically converted to credits at 1 USD = 100 credits — no manual conversion needed.
- PayPal — Send payment to the address / QR shown in your member center. Include your payment reference so we can match it to your account.
- Payoneer — Send payment to the Payoneer account shown in your member center, with your payment reference in the transfer memo.
Confirmation is not instant. After you send a payment, a staff member verifies the receipt and credits your wallet. This can take some time depending on the method and time of day. Your pending top-up stays attached to your account and the credits are added automatically once confirmed — you never have to pay twice. While it is pending, the amount is already shown in your member center as "pending".
Step 4 — Download
Open the article and press Download PDF. The file is generated on demand, carries a licensing watermark tied to your account, and stays downloadable for as long as your account exists.
What the PDF contains
- Ingredient or material ratios, stated as weights or percentages
- Process steps in order, with the temperature and time windows that actually matter
- Equipment notes and common failure points
- Where the process came from in China, and what has changed in modern practice
Pricing and safety notes
Historical processes are reproduced as documented. Some older formulas involve materials now known to be toxic — for example traditional alchemy and cinnabar refining work carried out with mercury and arsenic compounds. These entries describe the historical process for reference and study, and carry explicit modern toxicology warnings. They are not instructions you should follow without specialist supervision.
If something goes wrong
If a download fails, a payment is credited but the article still shows as locked, or you were charged twice, contact us with the order number and we will sort it out. Refunds are handled under the Refund Policy.