What is a hexagon jungler?

{League of Legends e-sports text}
Team battles, Gank, vision, operation, consciousness, hero pool...all full!
Gu Xing used his career to explain what a hexagonal jungler is!
...
The 18-year-old Gu Xing accidentally discovered his unique talent. He originally only wanted to use his spare time during the summer vacation to earn some living expenses and ease the financial pressure on his family, but he jumped headlong into the 2016 LPL by accident.
In the league, there are EDG sweeping everything, RNG rising suddenly, WE reorganizing version 2.0...
Surrounded by strong opponents outside the league, the LCK, which has won the championship for three consecutive years, is in full swing and is still continuing its dominance. The European and American divisions are just around the corner trying to turn around, and the LPL is still walking in the boundless darkness.
But it's all here.
From the moment Gu Xing embarked on his career path, his only goal was to be a champion!
From a ignorant rookie to a team leader, to the logo of the competition area and even the League of Legends, he has reached the top step by step!