Complex sentence: In 1924 he went back to Japan and studied under Dr.Unshin Hirahara and obtained his licence to practice Medicine.Then established himself in Ciudad Valles in the state of San Luis Potosi where he opened a pharmacy and a Medical Clinic.
Split into simpler sentences: In 1924 he went back to Japan and studied under Dr. Unshin Hirahara and obtained his licence to practice Medicine. He then established himself in Ciudad Valles in the state of San Luis Potosi where he opened a pharmacy and a Medical Clinic.