This is a dumbbell that can adjust the tension, which they got inspiration from a device that can exercise more muscles and understand the standard degree of movement. It increase the deformation of the internal spring of the dumbbell through the way of rotation, complete the adjustment of the tension. The combination of pull rope and human body combination can increase the different forms of exercise. The color line of the pull rope can prompt the completion degree of the action. When pulling out all the color pull rope, the user's action is within the standard range.

He is the founder of DAODUN, also a design educator and has won many international awards for both his students and himself, DAODUN combines teaching with social practice and creative teaching with product design to improve students' practical ability and cultivate students' thinking methods of creative product design. After a lot of practice, students can confidently step into work or have the ability to study abroad for further study, improve the background of designers, and provide designers to design companies. Dalton also cooperates with universities to develop design courses to serve more students studying design.

DAODUN gathers elite design talents and educational resources in the art and design industry, summarize years of design experience to create a new system of art and design education, improve the background of designers, and provide excellent design talents for the art and design studio at home and abroad.