Four Gifts

In Zhao’s family, there are 4 sisters. Their mother died were they were all very young and she left a special gift to everyone of them. Zhao Ruo Tian, the eldest is a prosecutor and she got a scarf. The second daughter, Ruo Wei, is a popular Magazine deputy editor got a mirror. Ruo Yi, a simple, caring girl who’s a project leader got a big luggage as the third daughter of the family. The youngest, Ruo Yu who’s a smart university student in philosophy got a pen. They don’t understand why the got these gift and their father told them that when they’ll find happiness, they will understand. What does that mean?