How to say"我听到他们说：“我们很强！”"in English?

I heared them saying,'We are strong!'
I heared them saying that we were strong
hear sb doing/do,这里是doing.一句是直接引用,一句是从句..都可以

We are so powerful!

I heared them said：“We are strong!”

I heared them saying that we were strong
that 可以省略
hear sb doing/do,这里是doing.这是间直接引用