The recipe of authentic Lanzhou beef Lamian Noodles, please help!

Besides Lamian Noodles, the most important technical content of Lanzhou beef, Lamian Noodles beef and Lamian Noodles is the pure and fragrant soup, which can be said to be the soul of Lanzhou beef noodles. No wonder someone wants to pay 500,000 to 600,000 yuan for the soup formula of "uncle horse Beef Noodles". People in Lanzhou eat beef noodles and soup before they know whether it is authentic. Since Chen Weijing of Huaiqing House made the first bowl of beef noodles in Jiaqing period of Qing Dynasty, the recipe of this soup has been passed down from generation to generation. The so-called clear soup is not ordinary beef soup, but is mainly made of dozens of seasonings and beef soup. The most representative beef noodles in Lanzhou are the famous "Majia Uncle Beef Noodles". Uncle Majia's beef noodles inherited the practice of Huaiqing Prefecture (now Boai County, Henan Province) and purified Chen Jia's Che Xiao's soup-stock beef noodles. It takes soup as the source of all kinds of umami flavor, pays attention to the use of soup, is good at making soup, and especially pays attention to the modulation of "clear soup", which is clear and fresh. The method of making soup is recorded in Qi Yaomin's Book. After long-term practice, the soup stock is made of beef, fat chicken and beef as the main raw materials, with more than 30 kinds of seasonings and traditional Chinese medicine. After boiling and slightly boiling, the flavor of the main ingredients is dissolved in the soup, and it has to be "cleared" twice in the middle. The finished product is crystal clear and delicious, and it is the most delicious soup in beef noodles. Nourishing blood and calming nerves, expelling wind and dredging collaterals into spleen, lung and kidney meridians have the functions of invigorating spleen and lung, consolidating kidney and replenishing essence. The beef noodle restaurant, which once flourished in the Qing Dynasty, never opened again because of the war. The method of making "Ma Jia Da Shu Beef Noodles" is absolutely exquisite. Even now, the production cost of each bowl is 10 yuan and 80 yuan.