One: the temperature in the oven is low, and after a long time, more water will be lost, resulting in the outside of the bread being dried.

Two: The temperature of toast depends on the kind of bread and the kind of oven. Big toast takes a long time, usually baked with180 C for 45 minutes. 30 minutes for Chinese toast, 25 minutes for Danish and large bread, and about12-15 minutes for small bread. Except for the big toast, others should be brushed with egg liquid after fermentation-decorating the surface-baking. The specific situation should be mastered through practice.