Rooting requires auxin, which usually exists at the tip of plant buds. You can take a small part of tender buds, break them into pieces, dissolve them in water, and put them into garlic culture solution (hydroponics) or culture soil. Be careful not to put too much, because too much will inhibit rooting. Generally, 0.5cm buds need about 200ml of water to crush, which will promote rooting, but the time is not necessarily two days, but it is faster than ordinary culture.