How to write the golden sentence of reunion at the age of 70?

The golden sentence of 70-year-old reunion is written like this:

1, 70 years old, we have experienced too many changes and growth, but what remains unchanged is the friendship among our classmates. May we rekindle the spark of youth at the party.

2. Time is like water, recalling the past years; Time is like a song. Focus on the present and write a new chapter.

3. Time is like a song. After 70 years, we will meet again. Our friendship remains the same. This is the most beautiful scenery.