First, steamed bread is no stranger, but this one-sided bread does not rise and become a dead knot, because there is always a little bit left in each one-sided, and the last steamed bread is kneaded by them, which is very dense and difficult to rise. I've studied it. Please verify if you don't believe it;
Second, in some places, the terrain and altitude are relatively high, the boiling point of water is less than 92 degrees Celsius, and steamed bread is not ripe.