Mr. Zhang and Ms. Li found a distressing problem, in their interviews or formal interactions with society, people are always asking them to repeat what they said, as if there is always something inaudible, Mr. Zhang is also distressed by one thing, when calling the other party sometimes will be called Miss. What is wrong with his voice? They went to the hospital’s voice specialist, and the doctor did a laryngoscopy and told them that they had “vocal fold grooves” and patiently explained the cause of the disease to them. It turns out that most vocal fold grooves are caused by poor closure of the upper and lower layers of the vocal folds during the secondary development of the vocal folds in adolescence, which results in a groove on the originally smooth vocal fold edge, which affects the vibration of the vocal folds and is therefore called “vocal fold groove. Unfortunately, although voice training for the vocal folds is useful, most of the folds need to be treated surgically after voice training. Because the formation of the vocal fold groove affects the vibration of the vocal folds, resulting in poor tone, audio, volume and length, there is no good way to improve all four at the same time, and often two surgeries are needed at the same time, such as tissue filling of the vocal fold groove and thyroid chondroplasty. Male patients, however, also need type III thyroid chondroplasty due to the feminization of tone brought about by the vocal fold sulcus, so it is particularly testing for the voice surgeon, who sometimes has to do a 2-stage surgery to supplement or correct the results of the first stage, just like cosmetic surgery. After listening to the doctor’s advice, Mr. Zhang and Ms. Li still decided to have the surgery, but what puzzled them was that their voices still could not improve about half a year after the surgery. During the follow-up consultation, the doctor told them again that people often could not adapt to the new vocal cords because of the remodeled vocal cords, which required patients to persistently do a period of pronunciation training. The two listened to the doctor’s words and taught by a professional voice trainer, through 2 The two listened to the doctor’s words, and after 2 months of study and practice under the professional voice trainer, people around them felt that their voices were really getting better and better.