厚厚 + 的 + Noun
The reduplicated adjective 厚厚 (hòuhòu) means 'thick' with an emphatic or vivid nuance. Reduplication of 厚 intensifies the description, making it more expressive and commonly used in narrative writing. It typically appears before 的 + noun to modify what is being described as thick.
地上铺了厚厚的一层落叶。
dì shàng pū le hòuhòu de yī céng luòyè.
The ground is covered with a thick layer of fallen leaves.
他穿着厚厚的棉衣,一点也不怕冷。
tā chuān zhe hòuhòu de miányī, yīdiǎn yě bù pà lěng.
He is wearing a thick cotton coat and isn't afraid of the cold at all.
桌上堆着厚厚的一摞文件。
zhuō shàng duī zhe hòuhòu de yī luò wénjiàn.
A thick stack of documents is piled on the desk.