If you put a bladder that is filled with air and tied up, into the pipe of a heated stove, the air inside will expand so much as to burst the bladder with a loud report.
Follow up adding moisture to the air by simply placing a large pot of water on the stove and letting it simmer.
接下来在空气中添加湿气，很简单地再炉子上放一个大的水壶并且让它沸腾。
3
The poor in these countries often literally live in open-air huts with large leaves for roofs and stacked bricks that serve as a Shared stove for multiple families.