Zao is a Chinese app that gained popularity for its ability to create deepfake videos. Users can upload their photos and use the app to swap their faces with those of actors or characters in existing video clips. This technology utilizes artificial intelligence to generate realistic results, allowing for entertaining and creative content. The app was launched in 2019 and quickly became a sensation in China, sparking discussions about the ethical implications of deepfake technology. While it offers fun possibilities for users, it also raises concerns about privacy and the potential for misuse in creating misleading or harmful content.