Yes I have heard it for multiple times.I am from China.And from what I know,it is an OS Huawei deploys on many of their new devices.According to my memory,Huawei claims that it uses an independently developed microkernel,with FreeBSD code for POSIX compatibility.However,some people suggests that it might just be a flavor of Linux.People here really don't like it as it lacks compatibility for most of commonly used applications.