Can water bamboo and string beans be eaten together?
Generally speaking, water bamboo shoots (jiaobai) and string beans (doujiao) can be consumed together, but moderation is advised. Detailed explanations are as follows:

Water bamboo shoots are rich in dietary fiber, B-complex vitamins, and minerals such as potassium and phosphorus. String beans contain high-quality plant protein, vitamin C, folic acid, and minerals like calcium and iron. When consumed together, they complement each other nutritionally: the crisp and refreshing texture of water bamboo shoots contrasts well with the tender chewiness of string beans, enhancing the overall flavor profile. Both are high-fiber, low-calorie vegetables; dietary fiber aids intestinal motility and digestion, while vitamins and minerals provide essential nutritional support. Additionally, the plant protein in string beans, combined with carbohydrates from water bamboo shoots, forms a more balanced nutritional profile, making this combination suitable for daily energy and nutrient intake. Their light preparation also places minimal burden on the gastrointestinal system.
However, attention should be paid to preparation methods. String beans must have their stem ends and fibrous strings completely removed. After washing, they should be cut into sections or diagonal pieces. Peeled water bamboo shoots should be sliced or cut into similarly sized strips to ensure even cooking. Because string beans contain saponin and plant lectin (phytohemagglutinin), they must be fully cooked—either by blanching first or stir-frying thoroughly over medium heat—to prevent food poisoning caused by undercooking. Water bamboo shoots can be added when the string beans are nearly cooked to preserve their crispness and tenderness.
When consuming, portion control is important to avoid excessive intake of high-fiber ingredients, which may cause bloating. Additionally, freshness should be ensured, and spoiled or deteriorated water bamboo shoots or string beans should be avoided to prevent adverse health effects.