How to germinate Lagerstroemia indica in advance in winter?

Put it in the heating room. Potted Lagerstroemia indica has strong cold tolerance, can tolerate the low temperature of-10 degrees, and most areas do not need to worry about the winter temperature. If it is maintained in the south, it can be directly put into outdoor activities without special treatment. If the northern area is too cold, it's best to move indoors. If placed in a heating room, if the temperature is too high, plants will germinate ahead of time, as long as it is kept at 0~5 degrees.