Li is an important theory category in Carving the Dragon .There are lots of Li in Carving the Dragon and they are standard of measuring writers and work.The article illumistrates by the way of writers

ability to perform the work

calculate the work

change in the index of refraction

created nature of the work

decreasing staff members but increasing the work effect

deteiledness of the work

deviation from the index value

floating origins of the work piece

focus of the work

follow-the-index

improve the work quality

into the grinding

knowledge divides the work

Liangzhou one of the work of Daqu

loss of the work ability

Methods of the work

observation of the work

pressure of the grinding wheel