The ideal height of the stool is: after sitting down, the thighs should be parallel to the ground.

Chair is a kind of daily life furniture, a chair with backrest and armrest. Sitting on the floor in ancient times, there was no chair. According to documents, the name of the chair first appeared in the Tang Dynasty, and the image of the chair can be traced back to Hu Chuang in the north of Han and Wei Dynasties.