Paper, gunpowder, silk and several other inventions were closely guarded secrets that had to be stolen, either by spies or interrogation, to be diffused outside the chinese sphere of influence. The only way into china from the rest of Eurasia was through several desert passes along the silk road, which were easy to monitor.
Modern Chinese companies see replicating intellectual property as the former (producing and selling goods that others have invented). Not condoning it in any way as they know full well it's illegal outside China, but they're companies. They're not exactly going to obey someone else's moral code and make a ton less profit.
Modern Chinese companies see replicating intellectual property as the former (producing and selling goods that others have invented). Not condoning it in any way as they know full well it's illegal outside China, but they're companies. They're not exactly going to obey someone else's moral code and make a ton less profit.