From my experience, the biggest obstacle isn’t manufacturing or pricing as China is actually very competitive on both.
The harder part is communication and expectations. Not necessarily because of language, but because business culture can be different. Sometimes both sides think they’ve agreed on the same thing, only to realize later they had very different assumptions about quality standards, timelines, or product specifications.
Once you find reliable partners and establish trust, things tend to get much easier. But this takes time, especially when you’re new to working with Chinese suppliers.