The wild vegetable recognized by Angela Zhang is kale. Angela Zhang recommended kale because it can prevent cancer and protect bones. Kale is a cruciferous vegetable. Food and Health-Knowledge of Scientific Evidence published by the Nutrition Society of China summarized and analyzed the domestic and foreign scientific literatures, and found that increasing cruciferous vegetables can reduce the risk of lung cancer, gastric cancer and breast cancer. As a green vegetable, kale is rich in calcium and vitamin K which can promote calcium deposition, so it can be said that it is beneficial to bone health.