More than 4000 musicians organized 50 reed-pipe teams get together to join a competition in Rongshui Miao autonomous county, South China’s Guangxi Province. /CFP Photo

All musicans from Rongshui, Sanjiang and Congjiang county and nearby villages. /CFP Photo

The competition has only one simple rule: Who can blow the reed-pipe loudest wins. /CFP Photo

And the referee will judge the results standing about 1 kilometer away, and signal who has won by using a flag. /CFP Photo