What is your Holy Grail? Is it travelling around the world or something else?

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Every person has his Holy Grail in his life,Holy Grail means what you want mostly,it can be one dream,maybe one thing or something like that.My Holy Grail is bo buy a apartment for my parents and take them to travel around the world.So I hope I can earn lots of money to do these things,and I am sure the moment these carry out ,the happiest person I will be.