elder "martial brother" Hao Weizhen. Li Xunzhi's sons were key disciples, including Li Jinfan (, Simplified Chinese , 1920-1991), and the lineage continued on through his grandsons and other family members, but among his most well-known disciples were also Wei Peilin (, 1913-1961) and Yao Jizu (, Simplified Chinese (), 1917-1998). Wei was rising to prominence with the National Sports Commission before he died while still in his forties. Yao led prominent t'ai chi organizations and schools, and published many books and articles, including (The Complete Book of Wu Style Taijiquan), which covers this lineage's forms and other training practices. That serves as their core handbook, supplemented with books and articles by fifth generation grandmaster Zhai Weichuan (, 1942-) and others, including Zhai's book (Wu Style 37-Posture Taijiquan) on the simplified form he developed for busy beginners. This lineage has continued to develop shorter forms, including a 28-posture routine, consistent with trends and standards in the field. They generally practice in middle frame, with small frame training for advanced students. Grandmaster Zhai was a disciple of Wei Peilin until Wei died, and then became a disciple of Yao Jizu. Zhai is currently the president of the Yongnian Yuxiang Taiji Research Institute (), headquartered in Yongnian with branches in Hangzhou, Tianjin, Shijazhuang, and other places in China, and has taught in many more locations nationwide. His son Zhai Shizong () is managing director and a master instructor there. In 1999 Zhai Weichuan founded a 1,000-student primary school centered around t'ai chi. Tens of thousands of adult t'ai chi students have also participated in his training programs, including groups from abroad, and he has accepted 140 formal disciples. In 2020 he appeared in the film submitted by China to place t'ai chi on the UNESCO Intangible Cultural Heritage List, representing the "Wuu" style. Zhong Zhenshan (钟振山, 1949-), another fifth generation grandmaster, is perhaps better known in the West than most representatives of this lineage. Born in Yongnian, he became disciple of Yao Jizu at age 13. He has written over twenty articles on taijiquan, and assisted Yao Jizu in compiling (The Complete Book of Wu Style Taijiquan). With others of his lineage generation, he helped develop the Wu-style competition and simplified forms. Winner of several gold medals in t'ai chi contests, he was appointed general instructor for a thousand-person t'ai chi performance, and has been officially recognized for his accomplishments. He has