Water spinach:

Originally known as Ipomoea aquatica, also known as rattan, sweet potato, concentric, heartless, urn, empty tuber, bamboo leaf and knot. White trumpet-shaped flowers with hollow stems are called "water spinach". Vegetables are widely cultivated in rural areas in southern China.

Lotus root:

It belongs to the lotus family. Lotus root is slightly sweet and crisp, and can be eaten raw or cooked. It is one of the common dishes. Lotus root is also a kind of plant with high medicinal value. Its roots, leaves, flowers and fruits are all treasures, which can be nourishing and used as medicine. Lotus root powder can help digestion, stop diarrhea, stimulate appetite, clear away heat, nourish and prevent internal bleeding. It is a good liquid food and tonic for women, children and patients. Lotus root is rich in vitamin C and minerals, and it is effective, beneficial to the heart, promoting metabolism and preventing rough skin. It is planted in Jiangsu, Anhui, Hubei, Shandong, Henan, Hebei and other places in China. Lotus root, also known as lotus root, is also known as white stem because its underground stem is white. Lotus root is also an important agricultural cash crop in the planting area. Lotus root is a plant of Nymphaeaceae.