Literally means ‘Small Face’. It represents the Six Sefirot, Chessed, Gevurah, Tiferet, Netzach, Hod, and Yessod. The Light from the upper three Sefirot of Chokmah, Binah, and Da’at comes to Malchut through Zeir Anpin.
The Torah is Zeir Anpin, a channel that connects us to the upper three Sefirot through Binah. Our connection to Zeir Anpin is through Yessod by studying the Torah on all levels. Doing good, Tzedakah, and all kinds of sharing.
Zeir Anpin also called Tiferet, is the name of the Sefira in the center of the Tree.