Although the spring has arrived, but the weather is still cold ,which is called as cold spell in later spring. In Mianyang,the weather has a regular pattern that the weather begins to change on Monday and begins to rain on Tuesday and it will last to wednesday.This phenomenon last four weeks .The bad weather makes us have no good mood,and make our life inconvenient.Fortunately,today the sun has risen,the air temperature has risen .We can feel the warmth of spring again,and everyone all gets good mood.And I think we must protect our environment ,although we say it frequently,we do it rarely.If we are still irresponsible for our environment ,we can't get good weather in the future.