True blue will never stain. What's the next sentence?

True blue will never stain. The next sentence is that good iron is not afraid of hammering. Real gold is not afraid of fire, which is a classic sentence in How Steel is Tempered. In chapter 8, political commissar Paul said, "True gold is not afraid of fire, and good iron is not afraid of hammering. Your ideal will come true one day." Therefore, real gold is not afraid of fire, and the next sentence is that good iron is not afraid of hordes.