The two men were Han Li and Elder Lu who had traveled from the State of Xi. As for the beautiful female cultivator, she was Han Li's concubine, Mu Peiling.
The silver-haired old man had stayed behind to keep watch over the Drifting Cloud Sect, preventing any sneaks from stirring up trouble while they were away. According to what the old man said, he had already participated in this grand meeting about eight times and had no materials that he currently required. Naturally, he wanted to give the opportunity to his younger Junior Martial Brothers instead.
As for Mu Peiling, she had reached a cultivation bottleneck and encountered Han Li when she left seclusion. When she heard that he was heading to the largest trade meet in the Heavenly South, her heart stirred and she asked to come alongside him to broaden her horizons. After all, if she were incapable of reaching Core Formation, this may be the only chance she had to participate in this trade meet.