How to evaluate singer Shuang Sheng's singing skills?

If you have studied vocal music, her voice can basically be recognized as professionally trained and diligent. Her voice is very scientific. It is scientific to reflect the position of sound, and it is not an exaggeration to say that it is a textbook. Let's talk briefly here. After paying attention to the position of larynx, the old-school bel canto teaching even deviated from the position of larynx. This method may be scientific in the past 60~80 years, but now, its scientific nature has been repeatedly demonstrated. When asked by professional singers around, most of them think that the throat position is better. The timbre is flexible and changeable, without the metallic feeling of traditional singing. The ending of Sword Jianghu and the imitation of "bully" in Notes on Tea Picking are both good explanations. Moreover, emotional expression is also very good. Cover songs in "Lucky Shaw" and "Big Fish". Showing maturity beyond their peers, the singers are excellent. Especially in mixed voices and fast songs. Many female voices, even professional singers, will appear "weak" or "air leakage" when playing high-pitched female keys. Shuang Sheng's high-pitched voice is solid, his chest is well supported, and his vocal cords are well closed, so he can't do it without basic skills. Tone accuracy, not to mention here, is the basic quality of professional singers. 5. Even if it's part of the draft, it's hard for famous singers to do it. For example, there are some messy people at the scene, and of course there are ultra-stable mobile CDs like JJ Lin. Summary: A high school student showed me his android program. The code is concise, the thinking is clear, the comments are complete, and there are many tentative ideas. With his ability, he can easily find a job in the mobile development industry. I wonder how he taught himself.