If this had come from Yan Xiao, Han Jiaojiao knew for sure that he would have been making sarcastic remarks, but since it was Lu Changyuan speaking, she knew...Lu Changyuan was...truly curious...
"Their teeth fall out quickly." Han Jiaojiao gently brushed a couple of times, and indeed a few small, white teeth dropped out. She caught them in the palm of her hand, and handed them to Lu Changyuan to see, "Dozens fall out every day, just like our hair, constantly falling out and growing back, so they probably don't get the chance to develop cavities."
Lu Changyuan picked up a tooth and peered at it closely, its tip was incredibly sharp and slightly translucent. Aside from some faint odor from the Alien Species, there were no other smells left on it.