The problem of reincarnation..

Ordinary people circulate in the six paths of reincarnation, while saints have jumped out of the six paths of reincarnation and entered the four holy dharma realms-Sravakas, Pratyekabuddhas, Bodhisattvas, and Buddhas.

After aliens are reincarnated on the earth, they become living beings on the earth. If they are humans, they are earthlings. If they are reincarnated as beasts, they are animals. There is nothing surprising. Of course, some habits from previous lives will remain, and those who practice spiritual practice will see some of them in their speech and behavior.