Shengjing!
Tian Guangming came to this place alone.
He was here to complete Li Xiandao's mission.
Why him?
That was because the others were injured when Li Xiandao was trying to cross worlds and thus Li Xiandao allowed them to rest for a period of time.
As a boss, one had to be kind and empathetic to their subordinates. Only then would they love and serve their boss better.
The only one who didn't do anything was Tian Guangming. Instead of helping, he found a primordial divinity which ended up messing himself up. Li Xiandao found it annoying leaving him by his side, so he told him to make the trip.
Actually, Tian Guangming didn't really want to come out.
He felt like he shouldn't have been heading out before he had totally merged with the primordial divinity of the Goddess of Light.
Due to the primordial divinity, he didn't even know what things he would do.