The subject wants to ask, "How to write a report about insisting on Planet 15 days?" The report is written as follows:

1. At the beginning of the report, briefly introduce the purpose and background of your participation in the planet challenge.

2. In the main part of the report, describe in detail your progress in the previous 15 days.

3. Discuss the difficulties, obstacles or challenges you encountered during the challenge.

4. Share your gains and learning in the first 15 day challenge.

5. Outline your plans and goals in the next challenge.

6. At the end of the report, thank the team or other participants for their support and encouragement.