(LAST UPDATE: 2/28/2010)
Li Mei's village was forced into slavery to help construct Shang Tsung's palace around the Soulnado, which had been a long-time legend of her people. In attacking Kano, however, she gained the attention of Quan Chi, who promised her freedom if she could win a tournament. Around this time she befriended an old warrior among her enslaved villiagers; the supposed "Champion of the Elder Gods" Shujinko, captured by Kano during his 40 year quest for the Kamidogu. Shujinko offered to train her even though he felt that her chances in the Deadly Alliance's "tournament" were slim. She later journeyed to a nearby forest were she was attacked by Moloch and Drahmin. She escaped through the trees as Shang Tsung came and formed an alliance with the Oni.
In Mortal Kombat: Deception, Li Mei returned (most of the newly-introduced fighters did not). Though her ending in Deadly Alliance depicted her winning Quan Chi's tournament, and "winning" the right to be imprisoned forever in one of the Dragon King's soldiers' bodies, Deception had Bo' Rai Cho rescuing her from this fate. However, he was apparently only partially successful, and Li Mei took on some of the aspects of one of these ancient warriors. As such, she is far more battle-oriented in this game, wearing armor, for example.
In Mortal Kombat:
Armageddon's Konquest mode, Li Mei is seen fighting Shinnok
in the Netherealm. She begins to gain the upper hand on him until Taven
(who is unaware that Shinnok turned evil) appears and demands that she
gets away from "Lord Shinnok". Li Mei attempts to attack Taven for interfering,
but is defeated and flees. Shinnok later reveals that this was all created
as a test for Taven, thus making it unclear if this was the real Li Mei.