As "The Legend of Korra" Book 3 prepares for its release, spoilers have surfaced due to the leaked episodes of "Change."

For years, fans have been curious about Lin Bei Fong's history because she is Toph's daughter. "The Legend of Korra" Book 3 episode 6 is exactly what the fans have been waiting for.

Here are some brief spoilers regarding Lin Bei Fong, Toph, and Lin's half-sister Su.

Episode 6, titled "Old Wounds," has Team Korra and Lin Bei Fong staying in the metal city of Sao Fu, where Lin's half-sister's family resides. Here, we get a lot of spoilers regarding Lin's past from an acupuncture session performed on Lin.

We learn that as teenagers, Su became mixed up with members of the Earth Triad, which eventually got her arrested by Lin. Spoilers confirm that it was Su who gave Lin the whip-lash scars on Lin's cheek. Although Lin wants to arrest Su, Toph rips up Su's arrest papers and asks Su never to come back to Republic City. Because Toph was the Chief of Police, she could not have a daughter in prison.

In "The Legend of Korra" Book 3, we have the first fight between Lin and her half-sister Su. During this altercation, spoilers also confirmed that Lin and Tenzin used to be in a relationship, but Tenzin broke up with her.

Spoilers also confirm that "The Legend of Korra" Book 3 will also have Korra and Bolin attempt metalbending for the first time.

To watch "The Legend of Korra" Book 3 episode 6, click here.