Handmade Lamian Noodles is a traditional food in China. When cooking, Master Lamian Noodles kneaded a dough into 1 strip, stretched it at both ends by hand, and then folded it in half.
The key is to understand the meaning of the sentence "1 strip is folded in half after stretching, then folded in half after stretching, and folded into a buckle every time". In fact, every folding is twice as much as before, the first folding is 2, the second folding is 4, and the nth folding is 2 n, so pulling it 8 times is 2 8 = 256.