What do you mean by seventeen mahjong tables?

Four men from the next generation men's team form a mahjong table to play.

Seventeen years old is called the next generation men's team, which means the representative men's team of the coming era. Mahjong table means a fun game composed of four people. This sentence means that four men from the next generation men's team form a mahjong table to play.

EVENTEEN has three teams, namely vocal team, hiphop team and performance team, which are active as a whole. At present, there is a separate singing stage, which is a special team composed of Quan Shunrong, Seok Min Lee and Fu Shengkuan.