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Ding Changsheng had just organized his words and was thinking about how to continue. However, at this moment, his phone rang. It seemed to be a foreign number, so Ding Changsheng hung up.

"If you're busy, I'll come back later?" Cao Ying asked.

Ding Changsheng nodded and said, "Please wait for me for 10 minutes, I have a very important call to answer. I've been waiting for the whole morning