IFA is the highest-level certified aromatherapist, and there are not many people who can live in China every year. My classmate's relatives in Shanghai are international aromatherapists certified by IFA and IFPA. Everyone calls her "Flower Lord", which is super powerful. She also has her own skin care brand: Su Zhi. She sometimes holds online and offline aromatherapy sharing classes. If you have any questions, you can ask them.