Jaco, the teaching director of the builder of Dali Education, has devoted himself to the teaching courses and product research and development of the builder for many years, teaching the management and practice of the second-level builder, the management and practice of the first-level builder, and the progress control of the supervision engineer's construction. He has taught more than 100 times and more than 500 class hours, all of which are taught in the national branch of Dali Education, with outstanding teaching contents.