Right now, the arrival of this many martial artists each one is more prominent than the other remind people of the famous Wulin Competition.
The orthodox sect either send their promising figure but most of the prominent figures actually come to the mountain by their own will, lured by the prospect of seeing the famous Flowing Sword Arts.
On the heterodox sect, there is a much simpler reason that they come. Most of them surely did not come to just trade pointers with Xi Feng.
For the Vulture Peak and Sun Devouring Sect they come to washed away their shame and take revenge for their Elders death.
The Thirty-Seven Cave Sect also sent their people over so that the heterodox sect could held their heads high.
They sent three of their Cave Master. All of them is dressed in black robe and they have this aura of darkness and gloominess around them.