Bone refinement pills

"Your highness, where are we going?" Xiaobo Feng asked in confusion, he followed an older-looking woman. She has graying hair but bright blue eyes, she is dressed up in a simple white robe with golden linings. 

A few curious bystanders cast her glance, dismissing her soon after and continued on their merrily way. The graying hair woman scoffed at the bystanders' actions and headed inside a building, filling out some paperwork and paying a small sum of coins.

Walking out of the building she bolted towards Xiaobo Feng; he set up a table and placed a pale blue cloth over and set up a large umbrella above a lounging chair. He silently set up the merchandise.

The graying-haired female assumed her position on the chair and acted like Xiaobo Feng's grandma. A few interested individuals stopped by and inquired about the pill bottles. Xiaobo Feng explained that these pills are for bone refinement cultivators; one or two people even bought three bottles of pills.