当你不知道事情的真理时，不要乱说话，因为你的生命处处有危险。

It means that,
If you don't know the reason behind something particular,
Don't sprout nonsense,
Because your life maybe in a danger.

When ppl speak, they nvr think before they say it.
Therefore, causing misunderstanding between them.
For example,
Friendship....

Everytime when i say something that has not been proven yet,
i loses a friend.
I remember saying that,
If i lose a friend it will a great blow to me.

But is my fault at first,
i should have think b4 i said anything.
So remember,
当你不知道事情的真理时，不要乱说话，因为你的生命处处有危险。