Make video review clearer and give every practice session a focus. • New tennis serve speed tool: estimate your serve speed from video, track your personal best, and share a video with your speed result. • Upgraded video annotations and commentary: zoom in, review frame by frame, draw on the video, and record voice commentary to create captioned explainer videos. • Expanded training library: browse, search, and save exercise demonstrations. Switch between Chinese and English subtitles on teaching videos. • More useful training recommendations: the AI assistant and growth reports suggest relevant teaching content to help turn insights into practice. • Keep your improvement priorities close: save suggestions from analysis reports, record practice notes, and pin what matters most. • Improved video processing for AI highlights, rally navigation, and page loading. Updated app icon and sharing watermarks.