1. Asparagus beef strips! In early summer, it is recommended that middle-aged and elderly people know how to eat and often eat 3 high-protein recipes to improve immunity In early summer, it is recommended that middle-aged and elderly people know how to eat and often eat 3 high-protein recipes to improve immunity In early summer, it is recommended that middle-aged and elderly people know how to eat and often eat 3 high-protein recipes to improve immunity In early summer, it is recommended that middle-aged and elderly people know how to eat and often eat 3 high-protein recipes to improve immunity In early summer, it is recommended that middle-aged and elderly people know how to eat and often eat 3 high-protein recipes to improve immunity 2. Yellow bone fish tofu soup! In early summer, it is recommended that middle-aged and elderly people know how to eat and often eat 3 high-protein recipes to improve immunity In early summer, it is recommended that middle-aged and elderly people know how to eat and often eat 3 high-protein recipes to improve immunity In early summer, it is recommended that middle-aged and elderly people know how to eat and often eat 3 high-protein recipes to improve immunity In early summer, it is recommended that middle-aged and elderly people know how to eat and often eat 3 high-protein recipes to improve immunity 3. Shrimp and tofu soup! In early summer, it is recommended that middle-aged and elderly people know how to eat and often eat 3 high-protein recipes to improve immunity In early summer, it is recommended that middle-aged and elderly people know how to eat and often eat 3 high-protein recipes to improve immunity In early summer, it is recommended that middle-aged and elderly people know how to eat and often eat 3 high-protein recipes to improve immunity In early summer, it is recommended that middle-aged and elderly people know how to eat and often eat 3 high-protein recipes to improve immunity