How many times has the National Skipping Open been held?

Four courses. The national skipping open competition includes the first national skipping open competition held in Guangzhou in 2007, the second national skipping open competition held in Langzhong in 2009, the third national skipping open competition held in Langzhong on 201kloc-0/,the fourth national skipping open competition held in Lianyungang on 20 12, and * * held four times. The National Skipping Open is a large-scale sports event sponsored by the Social Sports Guidance Center of the State Sports General Administration and undertaken by China International Sports Tourism Company.