The leaves of Oenanthe javanica are non-toxic, edible and contain more nutrients. Therefore, when jiaozi is wrapped, it can be wrapped with the leaves of Oenanthe javanica, which will have higher nutritional value for human body. Moreover, when purchasing water celery, you can also judge its freshness by its leaves. Generally speaking, if the leaves and roots of Oenanthe javanica are the same color and are relatively green, it proves that this Oenanthe javanica is relatively fresh.