1. A single grave with a chain tree is considered not a good phenomenon, and may be a symbol of bad luck.
2. If it is a cemetery, or it is covered with chain trees, it is regarded as a good phenomenon, because people believe that it can be a kind of protection against evil forces and protect the bones of ancestors from damage.
However, not everyone agrees with these views, so whether to plant chain trees in the cemetery still needs to be decided according to personal beliefs and opinions.