You put too much butter, just put 5% in proportion, you can add 2 grams of yeast, and the oven can also be divided into fire and fire. Fire 185℃, fire 220℃. What's more, you fermented it twice? The first fermentation takes 90 minutes at 38-40℃, then the dough is taken out and fermented for 45 minutes, and the environment is humid and sultry.