Did Ni's apprentice run a training class or something?

Yes In the column of "National Academy" in china national radio, Liang Dong talked with Dr. Lin Dadong, a disciple of Master Ni, at the unveiling ceremony of Tongxu Chinese Medicine Training Base in Henan Province. Starting from the past of Master Ni, he talked about the six classics of typhoid fever and artificial intelligence of traditional Chinese medicine. So Ni Xiahai's apprentices have training classes.