Group 1 - The core viewpoint of the articles highlights the surge in demand for traditional food items, particularly the "sauce elbow" from Tianfuhao, as part of the Beijing custom of "Yaochun" during the beginning of spring [1][3]. - Tianfuhao has significantly increased its stock levels across all stores and supermarket counters in Beijing by 3 to 5 times compared to usual, with single-store sales of sauce elbow doubling and a substantial rise in orders through e-commerce and delivery channels [3][5]. - The company has launched a variety of traditional New Year gift boxes, including classic items like sauce elbow and ancient-style sauce beef, as well as new offerings such as "Jingyun Tianfu" gift boxes, to meet the one-stop needs for family reunion dinners during the Spring Festival [5]. Group 2 - Tianfuhao has initiated a 24-hour production schedule to ensure uninterrupted supply during the Spring Festival, emphasizing its commitment to quality and tradition as it accompanies citizens from the beginning of spring to the festive season [5]. - The sauce elbow, made using national-level intangible cultural heritage techniques, is highlighted for its quality, being prepared without chemical preservatives and featuring a rich flavor profile that enhances the traditional spring pancake experience [3].