Liu Zhenying (known as Brother Yun) is an exiled Chinese Christian evangelist.
Supposedly, he was sentenced to a maximum security prison some time ago and escaped miraculously, and "without any human help" - according, supposedly, to an investigation by the Chinese government.
However, the only references I can find supporting this claim are from his autobiography The Heavenly Man and various Christian sites. The current Wikipedia page cites the stories from the book unskeptically.
Is there any independent source which confirms this?