How old is the fan cloth stone?

Yuanbaoshi, named after its shape resembling an ingot, is also called' Calendering Stone',' Cloth Treading Stone',' Cloth Treading Stone',' Cloth Treading Stone',' Flying Goose Stone', etc. It is a special tool used by ancient cloth dyeing workshops to grind the finished dyed cloth. It consists of two parts: upper and lower, and varies in size from place to place. In the Yuan Dynasty, there was the Cotton Map which recorded the pattern data of the cloth-kicking workers' working scenes. In April of the 3th year of Qing Qianlong (1765), Fang Guancheng, the governor of Zhili, painted 16 meticulous paintings of the whole process of cotton planting, textile and scouring and dyeing, and each picture was accompanied by a text description, which was framed into Cotton Atlas >: At the beginning of the book, I recorded the preface of Kapok Fu written by Emperor Kangxi of Qing Dynasty and presented it to Emperor Qianlong. In the same month, at the request of Fang Guancheng, Qianlong wrote a seven-character poem for each picture in the Cotton Atlas, totaling 16 poems, and allowed Fang Guancheng's poems to be attached to the end of each picture. Fang Guancheng officially named the Cotton Atlas with Imperial Title, and carefully copied the copy and engraved it on the precious end stone. The sixteenth picture is the "Training and Dyeing Picture", in which there is a description of the work scene of the cloth kicker. Kangxi also wrote a poem at the end: (Figure 1) (Figure 2). In folk paper horses, there are also scenes of kicking cloth, such as the paper horse "The God of Dyeing Cloth Cylinder". The paper horse picture is engraved with the words "Mei and Ge", which coincides with the folklore that the dyeing industry serves Mei and Ge Xianweng are the gods of dyeing cloth cylinders. There are four images of dyers in the picture, one is dyeing cloth in a vat, the other is spreading and drying the dyed cloth, the other is hanging the cloth with a bamboo pole in hand, and the other is kicking the cloth with both hands. It is said that September 9th is still the day when the old dyehouse offered sacrifices to the God of Dyeing vat. The author rummaged through a lot of information, but there is no literature record.