The Google Bard AI chatbot has been upgraded, offering deeper responses to video-related questions through the YouTube Extension feature. Users can now ask Bard questions while watching videos, ranging from finding specific videos to understanding the content of the video in detail, providing a richer video interaction experience. Bard's open access has been expanded to teenagers in most countries around the world, allowing them to consult Bard about school applications, new hobbies, and more, making the usage scenarios of Bard even broader. Overall, this upgrade will provide users with a deeper YouTube experience and richer interaction with video content.