Very sad to hear.
He was one of the last to learn qinggong (lightness skill), and he was a CMA maniac for sure. His mantis system was collected from almost all mantis schools in Taiwan, plus he had a big role in Liu Yunqiao's school.
He was very famous in Japan, too (even influencing video games). His most famous disciple there was Matsuda Ryuichi of course, who passed away first.