How to write English by texting on weekends?

Write a letter to a friend in another country.

Write a letter to a friend of yours abroad.

Tell them about your weekend and pretend it's 6 pm on Saturday.

Tell them about your holiday and pretend it's 6 pm on Saturday.

Your letter should have at least 10 sentences, and should include what you often do.

Your letter should have at least 10 sentences, and should include what you often do.

What have you done,

What you did a long time ago,

And what are you going to do this weekend.

And what to do this weekend.

Also try to include some time expressions in your letter.

Try to summarize this period in your letter.

Where does this passage come from? A little puzzled. At first, write a letter to a friend, and then write to tell them. Are these two things a bit contradictory?

I am a senior one student. Please forgive me if there is any mistake in the translation department. Thank you.