Secondary school entrance examination special jump rope adult exercise primary and secondary school students kindergarten children No. 6 No. 8 exam competition stalkless cotton rope
12 years old 14 years old 4 years old 14 years old 14 years old 3 years old 6 years old 5 years old 8 years old 7 years old 11 years old 9 years old 10 years old 13 years old