Rex's childhood

Still, the wench didn't give up and started to team up with her children's enemies to bring them down. Conniving with Mulan and the Xu family to poison Valen was the least Rex would bear. If she dared to really get involved with what really happened to Mav, Jeslyn, and Valen, Rex swore in his heart to get rid of that woman no matter what Maverick would say. 

Celestine placed her hand on Rex's balled fist. They understood his pain. They were there and witnessed the brothers' struggles, so they know that even though Mav and Rex are indifferent towards their mother, somewhere deep down in their hearts, they long for affection. Even though it's just a little bit of affection from that woman. Unfortunately, the woman is too greedy and self-centered to care about her children. 

Rex got up and walked out. He was in pain and he didn't want the others to see him in his worst state.