four moon-sized UFOs

　　A group of four moon-sized UFOs were spotted in Guangzhou. 　　Some Guangzhou residents have reported seeing four UFOs floating in the air for 30 minutes last night. 　　A witness, Ms. Chen, said she looked up into the night sky at 11:10 pm and saw a group of four moon-sized UFOs flashing white light and moving in unison. 　　Another witness, Mr. Wang, said that the UFOs later broke formation and started changing their positions, as if they were playing a game. Then, one by one, they moved into a cloud. 　　Some meteorologists and astronomers have said that the strange phenomena were not extraterrestrials, but rather special clouds which formed due to atmospheric changes and recent weather conditions.

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