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Powder Keg (炸药桶支线挑战; pinyin: Zhàyào tǒng zhīxiàn tiǎozhàn; accurate translation: Powder Keg's Line Challenge) is a Brain Buster in Kongfu World exclusive to the Chinese version of Plants vs. Zombies 2. The player needs to stop flames from reaching the kegs to keep them from exploding. If all the kegs explode, the player loses the level. An exploding keg can take out plants in a 3x3 area in front of it. It is recommended to bring ice plants like Snow Pea, as these plants can extinguish flames.