Frankly speaking, just join the party and play with our kids. They will have some shows and programs on that day too. I can also provide you some pics from the party last year if needed:-)
If you are asking for the purpose , well, we are looking for part-time English teachers. But Emei is too small to find foreigners who are willing to get to know us and join us, even through our kindergarten is pretty big with 200+ kids to date. So this might be a very good chance to get to know each other.
The kindergarten is pretty young and welcome new/creative ideas. It would be great if you want to stay as a part-time teacher afterwards, but it’s not a must.