Weakly ask what the bowstring of the ancient bow is made of

Where the bowstring to take the cocoon of silkworms eating cudgel leaves, the silk is tougher. Each with more than twenty silk thread for the bone, and then wrapped tightly with the line across about. Wrapped silk in three stops, seven inches apart from the empty one or two minutes not wrapped, so the string does not open the bow, can be folded and closed in three songs. In the past, the north of the bowstring, all of the cow's tendon for the quality, so the summer months, rain and fog, hindering its release, do not violate each other. Nowadays, silk strings are also widely available. Coated string or with yellow wax, or do not use also harmless. Where the two bow tie area, or to the thickest cowhide, or cut soft wood such as small chess pieces, nail sticky corner end, called the pad string, meaning the same as the carotid. Release the string to return, the male force inward, get this and resistance to stop, otherwise it is also damaged.

This can be seen from the silk (South) ~ cattle tendons (North) and other production