Read the beginning of the story below and complete the story in 600-800 words.
An Unexpected Guest
Riya was terrified when she heard the news on television that an alien spaceship had landed in her city. As a precaution, her father closed all the doors and windows.
Though everyone was asleep, Riya could not sleep a wink. The thought of aliens in her city kept her mind racing. It was almost midnight when she heard the door bell ring.
By now she was really scared. She ran towards the door but her father instructed her to go back to bed. She pretended to go towards her room, but hid behind the sofa and watched her father open the door.
这篇记叙文的题目是An Unexpected Guest, 已给出的前半部分隐晦地提到the alien可能会是那个意料之外的客人，而我想的是，如果人类登陆飞船或者外星球，对外星人来说也会是An Unexpected Guest, 然而这一点我也没有把握地很好，在平衡unexpected，guest两个关键词时过多着墨在“客人”上。
之前，我看了 The Martian 原版小说，Andy Weir以日志体的叙事方法推进故事，用非常通俗的语言但又足够有料的硬科幻拉近了读者和主人公Watney之间的距离，我也尝试写直白的对话和心理，结果太平铺直叙反而泯然众人。
倒是Ted Chiang那本著名的 Stories of Your Life and Others 给了我灵感，和刘慈欣一样，Ted Chiang很擅长在科幻语境下讨论非常哲学的命题，这一点我当然无所企及。
A beam of meek and mild moonlight was piercing through the window. William the Jr, Riya's father, was confused and also worried, whowould ring the doorbell in midnight since everyone in the town was warned that wander at streets or outside home was notallowed in case of any attack by outer space creatures. William doodled and unlocked the door cautiously, glancing at the outsidequickly but discovering nothing. He locked the door and examined once again while his daughter Riya who has an inquiring mind,terrified but still curious, could not wait to see who was exactly knocking the door. William murmured: "such a strange scenario," thenwent back to the bedroom. Riya then secretly moved to the door in dark. A slight click, showed her farther had returned to his dream. Riya composed her thoughts, felt reassuring that William didn't notice that his little mischievous girl had already slipped away.
Riya opened the door quietly and walked into the yard, the tender and tranquil moon was not disturbed by the unexpected knock.Riya stood still, attracted to the exceptionally beautiful night. Time flied unconsciously, the lunar white light turned into light blue,navy blue then indigo. An enormously giant spaceship overlapped the round moon once by the time, Riya was too terrified tospeak or even shout. Suddenly, a sprawling wind encompassing Riya's body and a human-like creature moving towards Riya.
Riya's fear outweighed her curiosity, she went back, didn't cry because her throat was sealed by panic. However, the bump in the road deterred Riya from returning back to home. She fell down, freaked out, and hurt her knees. Finally, she burst into tears while a shadow of a man-like creature over her hand were becoming even bigger.
"Did you hurt yourself, my young lady," Riya heard a gentle voice spoke, " I apologize for my ruddiness, I’m sure I will heal yourscar. " Riya turned back her head, seeing an adorable young man was smiling. He was a human, except his wholly blue skin.
"May I?" the man said then helped Riya to stand, his skin was cold and bloodless.
"Hello, but WHO ARE YOU." Riya's voice was trembling.
"Well, that is a difficult question, why not go back to my house, sip a cup of tea, then I will tell you my story,” the blue man smiled, waiting for Riya's answer.
"Alright, accept your hospitality." Riya was attracted to his kindness and friendliness, "But what do you mean by your house,"Riya stared at the gigantic spaceship landed on the field.
"Right there, come with me, young lady." The blue alien bent, inviting Riya as if he is familiar with human etiquette.
Riya's heart beat fast then ever when she walked into the spaceship, all the decoration and furniture was same as normal, except a huge center panel display surrounded the whole wall.
Riya escorted at the cozy sofa, wearing a warm blanket, sipping her favoriteEarly Grey. Koch, the blue man, the modern Spock, were telling his story to a fifteen-year-old young girl, from his naissance to his arrival to earth.
"So when did you leave the Milky Way." Riya asked, "I mean, since you are not belonging to our galaxy."
在整个文章的结构方面，作者也下了功夫。故事开篇，作者用细腻的环境描写和人物描写突出了故事的情景，把读者带入奇妙的科幻世界，让我们一步步跟着女孩探索，同时在文章的后半部分又巧妙设计了高潮，揭示了女孩Riya 的身世。这样的结构，在不超过两小时的写作的过程中，是很难得的。然而，可能也是由于时间的关系，整个文章的结尾明显力量不足，用“Riya was totally struck, then waked from a dream”来结束，多少显得有些突兀。若是在结尾处多下一点功夫，一定会为这篇佳作锦上添花。
最后，我想用一句话结束我对这篇记叙文的点评：Good writing is a mixture of the calculated and instinctual。这句话是我在一篇谈写作的文章中看到的。我一直都特别认同这句话，因为写作是一门艺术，需要灵感，也少不了细心的雕琢。要写好记叙文，需要兼顾创意和结构、行文及语言表达等多个方面，既要敢于另辟蹊径，也要耐下心推敲细节，斟酌词句。当然，在短短三小时内，做到这些是极其困难的，但长远来说，若能秉着不断探索，敬惜文字的态度写作，一定会取得可喜的进步。