The book Farewell to the Riverside wrote: "Du Jin never signed or printed his paintings, which shows the' social status' of these paintings; They are all customized and attached to calligraphy works. " No name means "this painting has its own function, and it is not considered as an independent creation of the painter." So the name of the painter is not so important to the painter or collector. At that time, it was quite common to use pictures without inscriptions, even the works of famous painters were no exception; Calligraphers only mention the name of the painter when they write. "