寫的真好，真正讀懂它很難，多數人是失意時、咽氣前才懂。世界上到底什麽是你的，這個問題可能有好多的人想弄清楚?

Finally it is done. It took me and my husband 2 hours to clean the fish tank , wash the stone  and change the water. When we bought this tank 4 and half years ago, the sales person suggested us to change water every 2 weeks. Forget about it. Too much work, then we change the water once every  month, sometimes even one and half months. Too lazy. I remember  it cost 17 cents each to buy the golden...