| Shopping Guide in Central Mall |
| Floors | Articles |
| 6 | Restaurant /Coffee shop/ Tea house |
| 5 | Children's pleasure ground/ Game center
|
| 4 | Electrical equipment, clocks and watches/ Writing materials and office supplies |
| 3 | Men's clothing /Bedding
|
| 2 | Women's clothing/ Children's clothing
|
| 1 | Fruit, vegetables, meat, eggs, drinks, cooked food, etc. /Kitchen ware |
Bushiness hours
Weekdays:8:30am—6:30pm
Weekends:9:00am—9:00pm |
是定义在
上的偶函数，则
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