The tuning of the guqin refers to the tuning method of the seven strings, sometimes called "tune", sometimes called "even", or called "string method". As far as the names of tunes are concerned, there are as many as thirty-eight kinds.

Among them, the most commonly used are five tunes, namely positive tune, tight feather tune, Qing shang tune, slow angle tune and slow palace tune. Among the five tunes, the positive call is the most, and the seven strings of the positive tune are scattered from low to high as: Zheng, Yu, Gong, Shang, Jiao, Zheng, Yu. , 6. Because the positive tune of the three-stringed palace corresponds to Zhonglu in the twelve rhythms (Huang Datai Jiagu Zhongrui Lin Yinan Wuying), the positive tuning is Zhonglu Jun; because the positive tuning of the five-stringed pitch is determined by the international standard tone A, The sound of the three-stringed palace is F, so the positive key is F. Zheng tune, also known as Gong tune or Zheng Shi tune, is the ancestral tune of traditional Chinese music. There are many qin songs played in positive tune, such as "Flowing Water", "Pingsha Falling Wild Goose", "Pu'an Mantra" and so on.

The fifth string of the positive tune is tightened (raised) uniformly, and the "tight angle is the palace" method is used to switch to the five-shelf tight-feather tone, and its seven strings are scattered from low to high: Shang, Jiao, Zheng, Yu , Gong, Shang, Jiao, the musical notation sounds are: 2, 3, 5, 6, 1, 2, 3. Such as "Yulou Chunxiao", "Yangguan Three Layers", "Xiaoxiang Shuiyun", etc., all use this tune.

In the same way, if you tighten the second and seventh strings with no shooting balance, you can switch to the shang tune of the Jiazhong balance.

The third string of the positive tune is always slow (lowered), and the "slow palace is the horn" method is used to transfer to the Huang Zhongjun slow horn tune, and its seven strings are scattered from low to high: Gong, Shang, Jiao, Zheng, Yu, Gong, Shang, the musical notation sounds are: 1, 2, 3, 5, 6, 1, 2. Such as "Autumn Wind Ci", "Drunk Fisherman Singing Evening", "Peilan", etc., all use this tune.

In the same way, slow down Huang Zhongjun's 1st and 6th strings, and then switch to Lin Zhongjun's slow palace tune. (See the five-tone table commonly used for guqin)

If you continue to tighten and slow down, you will complete the Luxuan Palace modulation of the twelve tunes of the guqin.

In traditional Chinese music rhythm and palace tune theory, many of the so-called difficult questions of today's people can be answered from the qin rhythm. Because it not only has a complete set of qin theories since ancient times, but also has more than 3,300 precious examples of qin songs in various historical periods, which can be verified by each other.

In 1978, after the chime bell was unearthed from the tomb of Zenghou Yi in Suixian County, Hubei Province, domestic archaeological experts and music scholars began to study the rhythm of the chime bell. Mr. Tong Zhongliang said in the article "A Hundred Bells Exploration": "Perhaps it is a coincidence that the overall structure of this 'double equal five palaces' coincides with the ancient lyre palace tune. Just like many ancient Chinese music theories can be derived from Just like the confirmation found on the lyre, here again shows the theoretical mystery contained in this coincidence." ("Huang Zhong", No. 4, 1988) The ability to draw a correct conclusion is due to his in-depth understanding of lyre temperament and palace tone theory. Research is inseparable.