Kongfu World - Day 6 (Pre-1.8)

Kung-Fu World - Day 6 is the sixth level of Kung-Fu World in the chinese version of Plants vs. Zombies 2: It's About Time. It introduces the Powder Keg brain buster.

Strategy
The best strategy here is to place Iceberg Lettuce behind your sun producing plants of choice, as a fail safe. You will likely not encounter this issue with Snow Pea, as it will extinguish torches. Also note that the gunpowder barrels replace lawn mowers and zombies will walk right past them for your brains. To avoid certain doom, extinguish all torches then bring along a Wall-nut or blocking plant of choice.