Arrange the formation

"I'll draw some more for you in a few days," said Noah Zhao.
With just these words, Erica Xu burst into laughter and asked with shining eyes, "Are you serious?"
"When have I ever lied to you?"Noah Zhao said with a smile.
"Why does it have to be a few days later? Can't it be today?" Xu Xin asked.
The smile on Noah Zhao's face suddenly stopped: "I can't do it today. I still need to prepare some materials."
"What materials? I'll get them for you right now!"
Noah Zhao said: "I...