An Ning sat on one side, while Zhang Rui held the phone and looked at it.
Ten minutes later, An Ning asked, "Is it done?"
Zhang Rui pointed at the paper, "There's one more question. I'll take a picture and enter it to see the answer."
"Then hurry up, I need to make a call," An Ning said.
"Okay, okay." Zhang Rui nodded repeatedly.
Another ten minutes passed, and An Ning's stomach felt a bit bloated, she needed to relieve herself. "Is the phone done? Can I have it back?"
Zhang Rui said apologetically, "There's just one more question, let me take a look at it a bit more!
"Then I'll go to the bathroom first, I'll lend it to you later." An Ning reached out to take back her phone.
Zhang Rui pleaded, "An Ning, I need to tutor the students soon, just a little longer, or if you're worried, hold it for a few more minutes and I'll be done. Then I'm out."
