I visited an uncle I had never seen with my mom and all of his kids were there with their kids. A total of six grandchildren (5 boys, 1 girl), ages ranging from 1.5 - 11 years of age running around and making a racket. In Canada, I am never around kids and I was never sure whether I would know how to play with them. Turns out, it's not a problem for me at all. It was also the first time I was ever called "叔叔" ("uncle"), which was a joy. Even the 1.5 year old was able to make out the words.