David has been involved in the field of information IT and programming since the Apple II era for nearly 30 years. 

Since 2002, he has been involved in information book writing, education and training, and consulting services. A dozen books have been published in Taiwan and the China mainland. Since 2006, he has been awarded 16 times in a row as Microsoft’s Most Valuable Expert (MVP), LAE (LINE API Expert) in 2018, and Microsoft Regional Director (Microsoft Regional Director) in 2020. In recent years, he has also participated in large-scale seminars in the Taiwan community as a speaker of agile development and DevOps.