请帮我修改一下，非常感谢。

China is one of the four ancient civilizations [Which are the other three?  All civilizations have many traditionsl festivals] so that there are many traditional festivals.__Now let me introduce Mid-Autumn Festival to you.  It would be better to rewrite this paragraph as a friendlier way that is filled with warmth.

Chinese civilization is an ancient one.  Thus there are many traditional festivals.  Let me introduce you to our Mid-Autumn Festival.  I hope you find it interesting.

The Mid-Autumn Day is a traditional festival with has a long history and as such there are many legends associated with it. which is only celebrated by Chinese people. [Understood from your first paragraph] It The festivals falls on August 15th of the Eight Month of the Chinese lunar calendar. year, During this time, when people of a families would get together and enjoy the dinner together. After that they eat There will be mooncakes after dinner. , which stand for the spirits of the festival-unity. They represent family unity and  Ofthen, if the weather permits, they will enjoying viewing the moon outside and catching up with all the gossips! go out of the house to enjoy the night which have bright moonlight, talking something about gain and loss, it is one of the important festivals for the Chinese people. It is an important time for the Chinese people.

There is a legend surrounding the about Mid-Autumn Festival.__According to Chinese mythology, the earth once had 10 suns circling over it. Once a upon a time, there were ten suns living on a magical island in the middle of the ocean.  There was a tree where they rest.  Each day only one of them rose to the sky.  However, one day, all 10 the ten suns decided to appeared go into they together.  The combined heat was too much for scorching  the earth with their heat. The earth and the world was scorched and everything began to die.  was saved when Then the people pleaded to a very skillful a strong archer named achieved,Hou Yi, who began to pursue the suns and succeeded in shooting one of them down each day.  However, on the tenth day, the people pleaded that if he shot the last one down, the world will plunge into eternal darkness and the result would be the same as if the ten of them were shining all together.  So the last sun was spared. For his heroic deed, he was given the elixir of life by the Queen of the Western Paradise [西王母]. 9 of the suns. Yi stole the elixir of life to save the people from his tyrannical rule, but his wife, Chang-E drank it. Thus started the legend of the lady in the moon to whom young Chinese girls would pray at the Mid-Autumn Festival.

However, there are two versions from then on.  One was that in his later life, he became a tyrannical ruler and his wife, Chang-O, to prevent him from becoming an immortal stole the elixir from him.  She grew light and fled to the moon as her husband was trying to shoot her with his divine arrows.  Another version is that Chang-O was curious about the elixir and tried it on herself. Instead of having only half of it, she drank all.  Then out of shame, she fled to the moon.

People in different parts of China have different ways to celebrations the Mid-Autumn Festival. For example, in Guangzhou in South China Canton [This is the more familiar term in the west], the huge lanterns show is a big attraction are displayed for the locals citizens. These thousands of differently shaped lanterns,  are lit, forming a though fantastic are like mere glows of fireflies compared to the brilliance of the contrast with the bright moonlight. [It is better to write this way as it gives a flavour of Chinese philosophy that no man-made stuff can be compared with those of nature.  The way you wrote is of Western philosophy that man-made stuff are superior than those of nature or that humans can improve on nature.  If you insist or disagree, you should write something like, "These thousand of different shaped lanterns are fantastic as if they are vying with the brilliance of the moonlight"]