It is very important to worship ancestors in graves, whether in rural areas or in cities, but sometimes there are many graves, which are close to each other, and there are no obvious trees or special things around them to distinguish them, and there are no tombstones with personal information of buried people on them, so sometimes ancestor worship may make mistakes and go to the wrong grave.
Some rural cemeteries in mountainous areas are generally in the mountains, where there are either many trees or grass, and many people do not erect tombstones. Going to the grave is also identified by some obvious trees or cultivated land around. Of course, there is nothing wrong with the new grave. Generally, ancestral graves with a long history are buried in the wrong graves. They are buried far away and seldom go, so they go when they go to the grave, so they are not familiar with the environment of that place.
However, not all graves can be erected. Some people who died unnaturally, such as accidents or violent deaths, are not good for their families and future generations if they are erected, because such people generally have heavy grievances, so they are not suitable for erecting monuments. There are also some minors, such as 18 years old or newborn babies who died. These people who died young can't erect a monument, otherwise it is not conducive to the reincarnation of the deceased and is not conducive to the family fortune.