"Grandma often complains of back pain if she sits for too long. So, I bought this specially designed item! Grandma won't have back pain anymore!" Arriving in front of Susan, Louis wiped his sweat. "Come on, Grandma. Open it!"

Susan opened the package enthusiastically. As soon as she found a sturdy rocking chair, she let out a sigh of emotion.

"This is a very beautiful chair, Louis."

"And it's comfortable too. You can sit here every time you read a book or knits," Louis smiled broadly.

After ...