Question

This story is more interesting than the one which you narrated yesterday. (Change the narration)

Answer 1

He said that the story which he narrated the day before was more interesting.

Answer 2

I told him “the story you said today is more interesting than the story you told yesterday”.  

Here an indirect sentence has been converted to direct sentence where a conversation is clearly expressed.

Here the sentence has been converted into first person to keep the consistency with the original sentence.

The use of tense is kept the same like the original sentence.