It's a rainy day again.Wheather of this summer  is so different than before.Because of the rain,temperature is not so high which is very comfortable for sleep.I  overslept again this morning,and I feel guilty.Afer lunch,I went to the lab,and redrew the grid.There are total three kinds of grids,however they are familiar ,so it is not so hard for  me.Then I chose one grid and used fluent to compute the sintering problem.I planed to study major book and english at night, unfortunately , with some unknown reason,the lights in lab all went out.Somehow I feel happy,because I have an excuse to relax tonight.Maybe I can watch some new movies.lol