Core Points - The article revolves around a son's concern over his father's unusually high electricity bill of 580 kWh, leading to a deeper investigation into the father's secret hobby of cultivating expensive orchids hidden within a wall [1][4][36] Group 1 - The son, Xiao Wang, discovers an abnormal electricity usage of 580 kWh for his father's apartment, which is significantly higher than the typical usage for a single elderly person [4][5] - The father, Lao Wang, initially attributes the high bill to a faulty meter, but further investigations reveal that the meter and wiring are functioning normally [16][18] - Xiao Wang's suspicions grow as he observes his father's living habits and the appliances in the house, which do not account for the high electricity consumption [12][24] Group 2 - After several attempts to uncover the reason behind the high electricity bill, Xiao Wang discovers a hidden space in the wall containing numerous valuable orchid plants, which require constant temperature and humidity control [32][36] - Lao Wang explains that he has been cultivating these orchids for three years, investing significant time and money into this hobby, which he kept secret due to its unusual nature for an elderly man [34][42] - The orchids are not just a hobby but also a potential investment, with some plants valued at several thousand dollars each, leading to the high electricity costs associated with maintaining their environment [33][49] Group 3 - The relationship between Xiao Wang and Lao Wang improves as they begin to understand each other's perspectives, with Xiao Wang expressing interest in learning about orchid cultivation [62][63] - The article highlights the importance of hobbies for elderly individuals, providing them with a sense of purpose and fulfillment [39][40] - The story concludes with a sense of reconciliation and shared interest between father and son, emphasizing the value of communication and understanding in familial relationships [62][63]