The Western Army Corps And The Northwest Army Corps

The four people were Yuanen Zhentian, Yuanen Tiandang, Qilin Douluo Tong Yu, and also the Tang Sect's Amorous Douluo Zang Xin. 

Yes, they were the four great Limit Douluos!

Just like what the Amorous Douluo had said before their departure. Tang Wulin must be protected by the four Limit Douluos at all times when they were at the frontline of the battlefield. 

Consequently, he drew the attention of the people immediately when he brought four Limit Douluos to the command post. 

Those with a Limit Douluo status were authorized to sit at the meeting table naturally. Yet, these four Limit Douluos chose to stand behind Tang Wulin. They were oblivious to the rest of the people around them, except for the Amorous Douluo who greeted his acquaintances.