Pi

The old man saw Zhang Zian hesitate. He thought he was going to be politely refused, so he turned around to get help.

Zhang Zian's hesitation disappeared and he smiled. "Sure, I have time now. Let's find a seat. Where would you like to sit?"　

"Anywhere will do!" The old man was thrilled. He looked around to find a seat as quickly as he could, just in case Zhang Zian changed his mind.　　

Once Zhang Zian made up his mind, he wouldn't change it. He put his phone in his pocket and pointed at an empty table in the corner. "How about over there? There are two free computers next to each other."　

"Okay!" The old man slowly followed Zhang Zian to the corner with his cane.

Zhang Zian pulled out the chair for him. They took their seats, with a computer in front of both of them.　　

"Uncle, I'm just wondering. Why don't you use the touch screen terminals like the other senior citizens? Isn't it more convenient?" Zhang Zian asked while moving the mouse to wake the computer up.