9 18 event: what title is appropriate?

You can choose the following title: 1. Remember September 18: don't forget the national mourning, we will constantly strive for self-improvement. 2. Don't forget the past and learn from the future. Remember September 18, and don't forget the national humiliation day. 4. Don't forget the national humiliation! Revitalize China! This is the beginning of Japanese invasion of China! 6. Opening-up does not forget the alarm bell, and development needs to be strengthened. 7. Commemorate the September 18th, remember the martyrs, remember the national humiliation, take history as a mirror, and strengthen the country! 8. I can't bear to look back on the situation of the year, and the national humiliation is unforgettable. 9. Remember the painful history and draw a blueprint for self-improvement.