There are two main types of food streets in Xi'an, one is the Internet celebrity snack streets such as Muslim Street and Yongxingfang, which exist in every Xi'an travel guide, which is well-known and more commercialized; The other is a food street with a heavy life atmosphere and frequented by local citizens, such as Sajinqiao and Dachejia Lane, which is located in the southern suburbs of Xi'an. From the streets to the alleys, there are a variety of restaurants along Caochangpo, many of which have been open for more than 10 years, and they feel like a hidden dragon and a crouching tiger. Lao Yan's handmade green vegetable noodles have been opened and sold in Caochangpo more than ten years ago, and have experienced the transformation of Caochangpo urban village, witnessing the transformation of Caochangpo, and the noodle restaurant has also been upgraded from a small shop of less than ten square meters to a large store of nearly 100 square meters.

Lao Yan's green vegetable noodles refer to spinach noodles. Different from the spinach juice and noodles squeezed out of other blanched vegetables, Lao Yan's family puts the blanched spinach residue into flour and mixes the noodles together, so that the noodles have a stronger spinach flavor and a darker color of the noodles. The spinach noodles are like emerald green cowpeas, lying in a bowl. Immediately after spreading the chili noodles, the hot oil is poured on it, and the oil just touches the noodles and makes a "zila" sound, which is the authentic oil and spicy seeds.

There are only three side dishes of potatoes, carrots and cabbage, which are very few compared to other noodle restaurants. However, the taste of the pork dumplings stewed in a large pot is quite delicious, and guests who like sour taste can drizzle a little vinegar, which is combined with the marinade, and the taste is more rich and mellow.

Compared with the old store that could only put four small tables at the foot of the grassland slope, today's Lao Yan's store is much larger, with more than a dozen tables in the space, reducing the queue. One wall of the restaurant is covered with photos of the old shop, spinach noodle making and the award-winning noodle restaurant, showing diners the glorious past of the Yan family. Although the noodle restaurant has opened a branch on West 5th Road, the taste of the main store is more stable and the table turnover rate is higher, so it is recommended that everyone go to the main store to try it.