Warren Mok Wah-yeun, known as one of “China’s Three Tenors”, tested positive for Covid-19 while entering Thailand for a holiday following a business trip to the United States. The Hong Kong based musician spent 26 days in hospital in the Thai capital Bangkok before finally testing negative for the disease and being allowed to fly home. But after he arrived in Hong Kong, Mok tested positive again and had to spend two more weeks in hospital before being declared fully recovered and discharged. …