Suddenly， the radio telescope FAST detected a series of bizarre electromagnetic waves from the outer space. A few hours later， a silvery-white UFO landed in the western desert.

Joe entered a fast food restaurant， ordering a hamburger and a cup of coke. Meanwhile， a young girl with a tray full of food sat opposite him.

“Hello， Im Twinkle，” the girl smiled and asked， “I overheard the word WeChat Pay in your conversation. What on earth is it？”

“How come you never heard of WeChat？” Joe seem surprised and glanced at the girl. “Well， WeChat is a popular APP that can be used for chatting， posting pictures or paying for bills.” Joe then clicked the APP in his phone and there appeared a picture of the Earth called “Blue Marble”， which was shot in 1972 by NASA. The girl stared at it， her eyes glittering with blue light. Joe introduced all the functions patiently to Twinkle and she mastered them quickly.

They became WeChat friends and always chatted with each other via it from then on. Twinkle gained much knowledge about the scientific development in China， such as， online shopping， high speed railway， Alipay， the space exploration， etc.

One day， Twinkle asked Joe whether human beings could communicate with aliens. Hearing the strange question， Joe was stunned for a moment， saying， “Well， you know， it is such a long distance that information reception will be the biggest obstacle.”

Twinkle gave a mysterious smile and disappeared ever since.

Seven months passing by， Joe still received no messages from Twinkle. He missed her much and clicked the WeChat again， hoping to find something. Suddenly， he noticed Twinkles avatar had been changed into a picture of the interstellar ocean. Joe felt familiar with the picture. He rushed to his study， searching for an answer in a pile of old books. Surprisingly， he found that the picture of Twinkles Avatar looked exactly the same as that of the Pegasus Star， which was shot decades before.

Breaking News： Last September， the FAST detected the Pegasus Star which is 17 light years away from the Earth and after a years effort by the scientists， people from the two planets can use WeChat for communication at present.

Joe folded his paper and froze， knowing that was exactly the time when he met Twinkle. He tried again to contact Twinkle through WeChat， only to find that her avatar had turned into another， in which appeared two planets and two people standing by each.

He smiled and sank into deep thought.

【作者簡介】劉佳儀，河南省偃師高級中學(xué)一九二六班。