Why it worked
The video uses a common ASMR trope of eating something visually interesting while counting, combined with a clear call to action and discount code, making it engaging and promotional.
Product placement
Silky Gem Crystal Candy (ACTS - it is eaten, and a discount code is provided for it, implying it is a product for sale. Removing it would change the video's purpose. It is a crystal candy shaped like a peony.)