The session crescendoed as the kindergarten students joined in. Clad in colorful attires, the children were joining Huang and Tucker in a joyful chorus: "By the mountains, under the stars, we sing as ...

"Throwing red embroidered balls is a 'Sanyuesan' tradition," explained Sherry Zeng, the principal of the kindergarten. "Historically thrown as tokens of affection, here they remind the children of the ...