As anyone would tell you, you play hacky sack with a shuttlecock.
The above picture is from one of my favorite places we visited during our trip. There is a place in Beijing called “The Temple of Heaven” which consists of the actual temple (where the emperor used to go to once a year to pray for good weather/harvests) and then a very nice surrounding park. The park is where a large number of retired people go every morning for exercise (above hacky sack or tai chi), music, or hanging out playing cards. It was a lot of fun to see all the retirees hanging out. They, of course, loved Henry.