Need some help in my app

Hey koders. I want some help. This is my appication and i want an feature. As you can see in the picture, an article is there. In that article i showed title,date,content in cardview. But in content,same title is shown. But i want to show content of an article. Means i want to show 1-2 lines of content of an article which includes read more button. If someone clicks on read more then that post should open. Overall i want to say that i want to show starting 1-2 lines of an article. How to do it? Any helps?

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Use this block.

But where i should place this block?

in the content part of call cardview1

Use it like this.

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