Ming Mei took a glass bottle, smashed it, and the glass shards cut into Lady Wangyue's legs and arms as she poured the powder on them. This powder only starts to dissolve and work when it meets blood.
It's the corpse disposal powder used by special agents and Assassins to destroy bodies and erase traces after killing someone.
This must be the first time it's been used on a living person.
After finishing, Ming Mei said, "Do you know why I chose to kill you this way? Because... you carved out the flesh from my stomach, it hurt so much, so I let you start feeling it from your stomach..."
Ming Mei sat down, watching the corroded area on Lady Wangyue's body grow larger and larger, her smile deepening: "You can't speak anymore, what a pity."
Ming Mei's phone rang in her bag, she glanced at the caller ID and calmly turned off the phone.