Shopee is an e-commerce platform that provides functions such as online generation of delivery bills, download and printing to facilitate merchants' shipments.

Here are the steps to download the delivery bill PDF:

1. On the Shopee website, go to the "Seller Center" page.

2. Find the order for which you need to download the delivery bill, and click the "Ship" button on the order.

3. After entering the order details page, check the order number and quantity of goods to be printed, and then click the "Print delivery bill and delivery bill" button.

4. On the print settings page, select the "Batch print delivery bills and save PDF" option.

5. Confirm the delivery bill printing information, you can make fine adjustments, and then click the "Print" button.

6. After the delivery bill is generated, you can find the "Download and Print PDF" button at the bottom of the page and download it.

It should be noted that the above steps may be slightly different due to Shopee system updates or changes to the operation page. For specific operations, please refer to the relevant help documents on the Shopee website or contact the platform customer service for details.