Can the living buy a cemetery for the elderly in advance?

Local customs are slightly different, and most places have the custom of buying tombs in advance; However, the state explicitly prohibits the sale of living cemeteries unless three conditions are met: first, if a person is dead, he should buy a tomb with a death certificate; Second, if you are over 80 years old, you can buy a tomb with your ID card; Third, he was terminally ill and bought a tomb with relevant medical records. Some places are lax in management and ignore the above views.