Sisters Who Make Waves 3 (乘風破浪3) is a popular Chinese variety show. Gillian Chung (鍾欣潼) and Charlene Choi (蔡卓妍) are recognised for their good singing skills and many netizens are looking forward to their joint performance. During the promotion video for the programme, some netizens discovered both lip-synced and it caused a controversy. They said: “What a disappointment. Might as well not sing if you cannot sing well.”

Subsequently, one of the crew members clarified that Charlene and Gillian used their real voices to sing but the production team did not use the live version for post-production.

Source: https://www.hk01.com/%E5%8D%B3%E6%99%82%E5%A8%9B%E6%A8%82/773814/%E4%B9%98%E9%A2%A8%E7%A0%B4%E6%B5%AA3-twins%E5%90%88%E9%AB%94%E5%94%B1%E4%B8%BB%E9%A1%8C%E6%9B%B2%E7%AB%9F%E7%84%B6%E5%81%87%E5%94%B1-%E7%8F%BE%E5%A0%B4%E7%B6%B2%E6%B0%91%E6%8F%AD%E8%83%8C%E5%BE%8C%E4%BA%8B%E5%AF%A6%E7%9C%9F%E7%9B%B8