Continuity mistake: When Beatrix confronts Bill in his hacienda, the Kashira (the end cap) and the Fuchi (the collar below the handle guard) on her sword are silver. The Kashira and Fuchi on Beatrix's sword are black.
Continuity mistake: In the Face-to-Face chapter, Beatrix walks into the apartment wearing a black leather jacket and a blue dress. Later, after recalling the time when she found out she was pregnant, they show her standing in the doorway to the backyard wearing an orange shawl which didn't appear prior to that shot.
Continuity mistake: When The Bride reaches for Bill's sword, he shot the TV to stop her. The next time the TV is seen, there is no damage at all.
Other mistake: At the very end of the film, when Beatrix kisses B.B. in the motel room, B.B. looks very briefly at the camera before the two of them smile in the direction of their television set.
Answer: It's a piece of white lotus blossom. The wuxia film "Fist of the White Lotus" is the one where Pai Mei acquires his skills and power.
LorgSkyegon