How to Make a Tnt Canon in MCPE

Ever wondered how to shoot zombies with tent in MCPE - well, here it is!

Step 1: Things You Need

You need a slabs, tnts,water buckets, and obsidian.

Step 2: Base

Step 3: Slab

Step 4: Water

Step 5: Loadin' It!

Step 6: 3...,2...,1...-launch!