There are many festivals in May, which are all beautiful memories left to us by our ancestors. Let us remember that there were such stories in history and inspire us to keep working hard.
What I know is that May 1 is International Labor Day, May 3 is World Press Freedom Day, May 4 is China Youth Day originated in 1939, and May 4 is also the anniversary of the May Fourth Movement, commemorating the May Fourth Movement in 1919. May 5 is the anniversary of Marx's birth, May 8 is World Red Cross Day (1948), and this day is also World Smile Day, may the world be full of smiles. In addition to these, the Tuesday of the second week of May is World Asthma Day, the second Sunday of May is Mother's Day, May 12 is International Nurses Day, May 15 is National Iodine Deficiency Disease Prevention and Control Day, and May 15 is International Family (Consultation) Day.
So far, I can only remember these, there are many more, you can Baidu, the more important ones should be May 1 Labor Day, and May 4 Youth Day.