Produce X 101 was the fourth season of Mnet’s reality television talent competition franchise Produce 101. The public (called 'national producers') "produces" a boy band by choosing 11 members among the 101 trainees from 47 different entertainment companies and independent trainees through online and live voting with multiple elimination rounds. National producers also choose the group's concept, name, and debut song. The debut group produced through this show named X1. (Source: Wikipedia)