India has issued a demarche to China after a woman from Arunachal Pradesh alleged that she was detained at the Shanghai airport by immigration officials for 18 hours, who “mocked” her and said that the territory was not part of India, according to Indian media. China says Arunachal Pradesh is a part of South Tibet — a claim India has repeatedly dismissed. Beijing has renamed places in the northeastern Himalayan state multiple times, prompting strong reactions from New Delhi. The woman, named Pema Wangjom Thongdok, said in yesterday’s interview to ANI that she was an Indian citizen residing in the United Kingdom for about 14 years. Thongdok said she was travelling from London to Japan’s Osaka via Shanghai on November 21, when Chinese authorities held her back for 18 hours. Detailing her “very long ordeal”, Thongdok alleged that Chinese immigration officials at the Shanghai Pudong International Airport declared her visa as “not acceptable” and her Indian passport as invalid. She further said the officials “mock...