The US supermarket giant Sam's Club is being investigated after a customer discovered a human tooth in a mooncake purchased from them. As per reports, a woman posted a Douyin video of the tooth in a 30-yuan (US$4) meat-filled mooncake purchased in Changzhou, Jiangsu province, China. The woman said the tooth belonged to none of her family members and that she had reported the incident to the police. A Sam's ...