Alessia opened the box, and a rich herbal fragrance filled the air. Inside were seven thumb-sized black pills neatly arranged.

Alessia explained, "Grandma, there are seven pills in total, one per day. As long as you persist in taking one pill a day for seven days, your leg condition will improve."

"Okay. Sia, you're so considerate." Grandma Carter smiled like a blooming daisy and asked a servant to bring water.

"Grandma, do you want to take it now?" Alessia asked.

"Of course, if ...