Toss a single leaf of pennywort into water, and within a few days it will fill the whole pot and grow everywhere

Everyone loves growing pennywort. It is pretty and cute, and extremely easy to grow. If you don't want to grow it in soil, you can simply grow it in water. Toss 1 leaf into water and it will grow within a few days.
To grow pennywort in water, we can simply pull a few stems from a previous soil pot, but note that the soil on the roots needs to be rinsed clean, and be careful not to break the leaves or stems.
At this point you can grow it in water. We can arrange the cleaned pennywort reasonably in a container, then pour in clean water.
However, pennywort grown in water is top-heavy and not as easy to secure as when grown in soil. At this point we need to put some pebbles or sand into the water container to hold it in place and arrange the shape.
After the pennywort is arranged, place it in a bright, indirect light environment to let it adjust. If there are yellow or rotten leaves, just cut them off directly.
Notes on caring for pennywort grown in water:
(1) Do not leave pennywort grown in water in direct sunlight for long periods, because sunlight will cause green algae to grow inside the vase.
(1) Pennywort grows very fast, but the space in water is limited. When it grows too full, you can promptly remove the excess to keep it looking neat.
(3) Pennywort has a strong tendency to lean toward light, so when growing it in water you should turn the vase often, otherwise the leaves will easily grow leaning to one side and won't look good.