Ming De Li received his degree of PhD in chemistry from University of Science & Technology of China where he completed his training about high-temperature superconductivity due to his strong interest in physics. That time, his goal of scientific research was to uncover the puzzle of high temperature superconductivity, and it was unimaginable for him to work for medicine. But an incident changed everything. At the beginning of 2009, the second year of his immigration to Canada, when he was diagnosed of chronic prostatitis, and his doctor, an army physician discussed seriously with him about his disease, he was shocked and decided to study new therapy for prostatitis. That time was the Chinese New Year, very few patients were in the hospital, so he could discuss the literature with his doctor. When his doctor told him only lipid-soluble drug could penetrated into the prostate, he recognized that only ultrasound can solve the problem by his instinct of chemistry. The next year, he invented the medical device of far-field continuous physiotherapeutic ultrasound, and cured all his prostate infections. In 2015, he applied for his first Chinese patent about this invention and took a further step to apply for PCT international patent in 2016. He became AIUM and AAAS members due to his contribution to this discovery. In 2013, he registered his company in Canada for development of this invention. From 2014, he devoted all his efforts to industrial design and edition of product standard, and he built broad communication with his suppliers.