Li's secret: To have the bulbs bloom on New Year's day, place them in water 30 days in advance; to have them bloom for the Lantern Festival, place them in water 20 to 25 days in advance.
他的要訣是：春節前三十天，元宵前二十到二十五天下水，應該分別會在春節和元宵開始開花。