Complex sentence: She first investigated the Chinese medical classics in history, visited practitioners of traditional Chinese medicine all over the country on her own, and made a notebook namely "A Collection of Single Practical Prescriptions for Anti-Malaria".
Split into simpler sentences: She first investigated the Chinese medical classics in history, visited practitioners of traditional Chinese medicine all over the country on her own. She gathered her findings in a notebook called "A Collection of Single Practical Prescriptions for Anti-Malaria".