1) Note: Interpretation refers to notes, which are generally used as notes; 2) Sparse: comb the sound and dredge its meaning, such as notes; 3) Notes: indicate the meaning of the ancients, or break its original meaning to make it distinguishable; 4) certificate: test also. If there is an ancient pre-Qin book called A, many people in the Han Dynasty can't understand it, so there will be experts and scholars to explain it, so there will be notes. In the Tang Dynasty, people at that time not only didn't understand the original version of the pre-Qin Dynasty, but also didn't know the notes of scholars in the Han Dynasty, so there were experts and scholars to explain the original version of the Han Dynasty, that is, notes, and then to the Song Dynasty, the original version of the pre-Qin Dynasty, notes in the Han Dynasty and notes in the Tang Dynasty.
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