This block allows you to show the Description on the Product page.

Product description is added to Product Main by default. You can drag it to any position that you wanna show it.
From Product page > Product Main > Click Product description, the settings sidebar will open and you guys can configure some options:
Description mode: You can choose Description mode here, our theme allows you to choose Full Description and Short Description
1. Full description
When you choose Full description, all the content of the product description will show here:

2. Short description
If you choose Short description mode, you can paste the content of the short description here, and this content will be applied to all products.

If you don't paste any content in the short description box, the short description will show follow the full description. But the length of the short description will depend on the Excerpt length option.

Excerpt length (integer): adjust the length of the description.
Use Read more: enable the “Read more” button for the description.
Read more label: You can enter the string that you wanna show on the Read more button here.

You can use Metafield to configure the content in Short description for a specific product. Please follow this guideline.