Shen Yuchu finished her dance and stepped down from the drum. Her foot, which had not yet fully healed, scraped against a protruding nail on the rim of the drum as she descended.
This was not a military drum, but one temporarily borrowed from outside specifically for the performance meant for Xin Yinan.
Consequently, the drum had an outward-facing nail, though it hadn't affected use while stepping on the drumhead.
Chapter 115