Bawangbian: Bawangbian (scientific name: royleana) is a Euphorbiaceae plant, which is endemic to China. It is distributed in Indian, Pakistani, Himalayan and Sichuan, Yunnan and Guangxi in Chinese mainland. It grows at an altitude of 200 meters to 1 0,750 meters, and often grows in dry-hot valleys. At present, artificial cultivation has been introduced. Bawangbian belongs to a variety of Cactus. It was originally grown in the tropical desert of Africa. It is not only tall, but also full of thorns and flowers. The pedicel of each flower is rectangular, and the flower is trumpet-shaped when it opens. These flowers are fragrant and beautiful.

Overlord whip: tree-shaped, with fleshy and stout stems, 5 edges and a round back. The branches are spiral, light green, then gray, with black thorns. Leaf blade is fleshy, leathery, obovate, with gradually shrinking base and light green. Stems and leaves contain white milk, which is toxic. Like light, like warm climate, very drought-tolerant. Afraid of cold, low temperature often leaves.