This is copper money grass, also called mushroom grass. We can use the WeChat applet to search:

1. Open WeChat, then click "Discover" at the bottom - "Mini Program" and click to open.

2. On the mini program page, we click the search button in the upper right corner and enter "Shihuajun" to search.

3. After the search is completed, click to enter the program, and then click "Take photos to identify flowers" pointed by the arrow.

4. Place the plant picture into the lens and click the capture button below. Or click on the album in the lower left corner to select pictures.

5. As shown in the figure, we can see the search results. Here is a detailed introduction to the plant.