1. Emphasize the difference: The idiom "incisively and vividly" emphasizes the rigidity of calligraphy, vividly depicts the calligrapher's handwriting going deep into the board for three minutes, and shows the calligrapher's superb skills. This idiom can also be used as a metaphor to deeply analyze problems, emphasizing quick thinking and unique insights, while the idiom "lifelike" emphasizes that artistic images are very vivid, just like living, and is often used to describe sculptures, paintings and other artistic works that give people a sense of reality and vivid images.
2. Different usage: The idiom "incisively and vividly" is mainly used to describe the strong brushwork of calligraphy, which can penetrate deeply into the wooden board and show the calligrapher's superb skills, while the idiom "vividly" is mainly used to describe the vivid artistic image.