The mother of an imprisoned and tortured 21-year-old man in China sought help through social media when police knocked on her door. Coco (pseudonym) said in a recent interview with the Chinese Epoch Times that she feared losing her own life, so she didn’t open the door. “This is Tengyu’s mother. Hurry! They’re knocking on the door outside,” she pleaded in a recording of her whispering voice. The recorded message in Chinese circulated on Twitter Wednesday morning. A policeman’s voice heard in the background shouts, “Police visiting; open the door!” Coco’s son, Niu Tengyu, has been in prison since 2019 and repeatedly beaten for allegedly posting photos and identification numbers of Xi Mingze, Chinese leader Xi Jinping’s daughter. Niu was abducted in July 2019 and sentenced to 14 years imprisonment for “picking quarrels and provoking trouble” by Maoming Maonan District People’s Court in China’s southern Guangdong Province last December. While …