Corrections

My house has a balcony which is about 5 square metres.

Whereas it faces to southern, sun shuits the balcony all the day, so it would be hot in the summer.

My father, retired 1 years ago, thought it was time to take measure to solve the problem.He found a big bin, which is as big as the backeries' plastic bin, and collected some little pieces of rock.After that he made terrace, bridge, cannel and pavilion of the small stone, then poured some water into the bin.The fish must be the leading role, and my father bought some minim which are red and gold.

However, there is a problem that we must renew the water every other day, and it is inconvenient.My father said it must be a small ecosystem that has a certain degree of self-purification.So some water plant and viviparas became a menber of the fish bin.Now we can renew the water one time a week.

It not only solved the promble of being too hot in summer but also provides a conern for me to release.