2. "smell". Is to smell, according to the smell of different places to distinguish whether there is an ancient tomb. For example, in Qin and Han tombs, mercury and cinnabar are often injected for anticorrosion; However, the tomb walls after the Tang and Song Dynasties were generally painted with green paste and mud. It is said that some people's sense of smell is beyond the reach of ordinary people, even worse than hounds. As long as they smell it with their noses, they can judge the age of the tomb according to the smell in the soil and whether it has been stolen. Some people can even accurately distinguish the tombs of the Han Dynasty from those of the Tang Dynasty. Tombs in Ming and Qing dynasties have a strong smell, because they are relatively late and are mostly masonry structures. Another important meaning of "smell" is listening to sounds. Generally, large-scale ancient tombs will be filled with a lot of soil when buried, but due to the age, the soil will inevitably settle naturally, and some will also appear the phenomenon that the outside is solid and the inside is empty. Once the tomb is shaken, such as thundering in the air, it can send a sound different from other places to the surface. Experienced people can judge whether there is a mausoleum here by the subtle differences of these voices. Moreover, graves of different geology and ages make different sounds.
3. "Ask". Searching for a mausoleum requires collecting information from many sources. There are many stories about ancient tombs in China folklore. In some remote places suitable for building tombs, you can ask the locals about their history, who famous people they have had and whether there have been any strange phenomena. By talking with these people, we can get information about ancient tombs.
4. "cut". It is a thorough and detailed survey of the surface, which is also the most important link in finding ancient tombs. It can not only judge the actual situation of the ancient tomb, but also judge its age, scale and funerary objects. Insert Luoyang shovel into the ground and judge by the soil layer picked up by the shovel. If the soil layer is consistent in color and harmonious as a whole, it proves that the underground here has not been excavated and there are no tombs. If there is a fault in the soil layer, the color changes, and there are different five-flowered soils in the middle, there are probably tombs. If there are some impurities in the soil, such as metals, pottery pieces, sawdust, cinnabar, pit ash, etc., it means that there must be ancient tombs here, and the age of the tombs can be judged according to the metals and pottery pieces. People with a keen sense of smell can also judge the tomb information according to the smell of the soil layer brought out by Luoyang shovel. In the process of Luoyang shovel detection, we can judge the situation of tombs according to the different feelings of hands on the shovel handle. If the hand feels light, it means soft soil. If there is a strong tremor in your hand, it means that you have touched something hard. Then according to the subtle differences, you can tell whether it is a coffin, a stone or something else.
It can be a wild road. For example, Luoyang shovel was invented by grave robbers. But now, archaeologists have been using this thing for a long time, which is regarded as "standard equipment". Archaeologists also need to study some historical books and ancient books to judge that there may be tombs somewhere.
Sometimes an ancient tomb may be found during the construction process, which is very accidental and cannot be found by this. You can't dig around with an excavator, can you?