Luoyang agarwood is also a unique flavor dish in Luoyang. According to legend, when Wu Zetian was in Luoyang, a radish weighing several dozen kilograms grew in a vegetable field in Chengdongguan, and the vegetable farmer dedicated it to Wu Zetian. The chefs of the imperial dining room cut the radish into shreds, mixed it with powder, steamed it, and served it with a delicious soup, which has a bird's nest flavor. After Wu Zetian tasted it, she was full of praise and named it "Yancai".