It's called butter dessert. It is prepared by sieving flour, adding salt, sugar, milk powder, butter, water and yeast, kneading into dough, fermenting, taking out, exhausting, dividing into 6 parts, softening, standing for 15 minutes, rolling into a rectangle, turning it over, thinning the bottom edge, rolling it from top to bottom, closing it, rolling it into strips, and rolling it into strips.