Li Chien has his own method for coping with heavy rains: his cactus park is equipped with its own drainage system and fans to control the soil humidity, while the excess rainwater is used for irrigation and hosing down the roads.
對付豐沛的雨量，李堅自有錦囊妙計：在整個仙人掌公園地底，裝設完善的排水系統及抽風機，控制土質濕度；收集的雨水，則作為灌溉、清洗馬路之用。