Mr. He's old photos when he was teaching at Beijing Foreign University have recently been **, and he is young and energetic. Time seems to have stood still in his body, and Mr. He really won't grow old. This old photo sparked a contrast between his past and present, but surprisingly, he didn't change much. 
When he was teaching at BSU, Mr. He had already demonstrated his outstanding talent and teaching ability. His classes are dynamic and loved by his students. As a young man, he was always full of passion in the face of challenges, and his love and dedication to education made him stand out in the teaching arena. Now, although the traces of time have quietly climbed on his face, his enthusiasm and dedication to education have never changed. 
Over the years, Mr. He has maintained a good living habits and mentality, which may be the secret of his youth. He is an avid sportsman, a healthy diet, and an avid reader and researcher. These good habits not only keep him healthy, but also nourish his mind and keep him young at all times. 
Mr. He's charm lies not only in his appearance, but also in his inner qualities. He is very knowledgeable and has always been a role model. Whether he was a young teacher at BFSU or a veteran in the field of education today, he has set himself a high standard and set an excellent example for his students. 
This old photo is not only a memory of Mr. He's past, but also an affirmation of the present and the future. His story tells us that maintaining a youthful mindset and good lifestyle habits is the key to slowing down aging. Let's learn from Mr. He, cherish every day, and let youth stay in our hearts forever.