The copper silk grass is shown in the picture:

The scientific name of copper silk grass is Pteris argentea, which is also known as Tongjing grass, Hypericum japonicum, Jinniu grass and copper silk tea. Pteris argentea is a rare small fern with small plant shape, strange leaf shape, hard and shiny quality, clear silvery white back and strong adaptability. It belongs to the genus Pteris of Pteridaceae, with erect or inclined rhizomes, covered with bright black lanceolate scales with reddish-brown edges, clustered leaves with dark green surfaces, silvery white or milky yellow powder particles on the back, five-pointed leaves, pinnae bases connected or separated from each other, terminal pinnae nearly rhombic, lateral pinnae triangular, and chestnut brown petiole with luster. Gynostemma leucocephala is mainly distributed in Yunnan, Guangxi, Jiangxi, Zhejiang, Shaanxi, Shanxi, Hebei, Shandong, Inner Mongolia, Liaoning, Jilin and Taiwan Province provinces, Japan, North Korea and the Far East in China. It is a stony fern, which mostly grows in limestone crevices. It is sun-friendly, cold-resistant and drought-tolerant, and it likes to grow in loose calcareous soil and can also grow in neutral or slightly acidic soil. The propagation of Pteris argentea is mostly sown with spores, and the survival rate of ramets is low. Before sprouting in spring, the whole plant is dug up and planted and carefully managed. If spores are used for sowing, calcareous raw materials should be used as the substrate, and a small amount of hydrated lime can be mixed in the stone or sand. After sowing, there is no need to cover the soil, keep it warm with a glass cover, and put it in the shade. After that, keep the soil moist by soaking. When the sporophyte grows up, it should be planted in time to gradually receive light. Because this plant itself is a rock fern, it has strong adaptability to adverse environment, and is often used as a greening ornament material on waterstone bonsai and rockery. For soil cultivation, humus soil, broken bricks or sand should be mixed in equal amounts, and a small amount of lime should be added. When planting, the pot should not be too big and the planting should not be too deep. Spring and autumn can receive half-day light, and direct sunlight should be avoided from June to September. Keeping the soil and environment moist and fertilizing in time can make it grow vigorously, the leaves are green and bright, and the positive and negative colors are in sharp contrast. This grass is drought-tolerant. Even after a long drought, it doesn't matter if the leaves curl. As long as it is watered, it will soon spread out.