Beijing is a place where small commodities are sold. If there is a Chinese knot, you should sell thread. The ring rope of the 5th hand is generally 1 yuan 4m or 6m, and the earliest is 8m. There are more people knitting, and the price of rope has also increased. Fine knitting is the kind sold in the yard. 5 yuan is the most expensive, and 5 cents and 3 yuan should be available. The left picture shows the No.5 rope, and the right picture shows the thin rope. ?