It is the Four Immeasurables.

是四无量心。

youdao

The Buddha came to this world because of the Four Immeasurables.

佛陀是因为四无量心，所以来到人间。

youdao

A: Being able to live a full life based on the Four Immeasurables (loving-kindness, compassion, rejoice, equanimity) perfected to help as many as possible is the greatest love.

答：能够拥有一个建立在四个无量大德(仁慈、怜悯、喜悦、淡定)上的完满人生并尽量去帮助别人称之为大爱。

youdao