Hello everyone, Happy New Year.
My website is https://cphagen.com 
Using cascade theme, I guess.
Could you tell me how to add a badge (Example: 25% OFF) to products part of a specific collection ?
I need to apply automatic discount to a specific collection (way too many products and variants to change price manually) AND I would love to display badges on the products grid, to clearly inform customers BEFORE checkout.
Any solution? 
Thanks everyone
You can separate the product configuration metafileds, then through metafileds to take the corresponding value.
Sorry, but I don’t understand your reply.
Can you explain more? Thanks 
Step1:settings->Metafields->Products->Add definition
You then configure a Metafields for the discount and then go to the code and reference that Metafields and it comes out.
Sorry, but still not getting it.
I am not an expert 
Then you can invite me to collaborate with you by email.
I can build a Metafields for you first and then write it into the code. You can then match the value of the Metafields by yourself.
Hello again,
Why not… but I don’t think I understand your solution.
https://help.shopify.com/zh-CN/manual/metafields/editing-metafield-definitions
You can see how to configure the Metafields for individual products in this
Full Video how to setup automatic discounts.