Based on the detailed description in the poetic essay "Qin Fu" 【琴賦】 by Xi Kang / Ji Kang (223–262), the form of the qin that is recognizable today was most likely set around the late Han Dynasty (206 BC - 220 AD). The earliest surviving qin in this modern form, preserved in both Japan and China, have been dated to the Tang Dynasty (618-907). Many are still playable, the most famous perhaps being the one named "Jiuxiao Huanpei" 《九霄環佩》, said to have been made by the famous late Tang dynasty qin maker Lei Wei (雷威). It is kept in the Forbidden City Museum in Beijing.