It may not look like much, but its pedigree can beat most mainstream sports hollow. Jianzi (aka &lsquoChinese hacky sack&rsquo, aka &lsquofoot badminton&rsquo, aka &lsquofeatherball&rsquo, aka &lsquokinja&rsquo) has been played in China since the fifth century BC. From there it spread to other parts of Asia and, in 1936, landed in Europe, when a Chinese athlete offered a demonstration at the Berlin Summer Olympics.