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On the day of the school festival, DX and Kai Xin arrived just in time for the racing events. They immediately went to the spot that was reserved for them and once they were seated, they immediately looked for the twins amongst the children who were running around on the field.
Jack and Lyle had their swimming and taekwondo competition respectively in the morning. However, they understood that with Kai Xin's condition, it would not be good for her to stay from morning until the evening.
Furthermore, they figured that since they did not have any worthy opponents in those two fields, there was no reason for them to have an audience. They wanted their parents to see them fighting in fields that they were struggling in.
So, despite Kai Xin's insistence on going for the whole thing, they told her to come at 4 p.m.