Didnt the Chinese come here way before the Duyfken?
There is no sustainable evidence that this was the case. There is a theory that this could have happened. In fact there are many such claims that others preceded Janszoon in the Duyfken and Torres in San Pedro, the Spanish, the Portuguese, French, even the Phoenicians. Few historians support such claims, relying instead on the clearly documented voyages of Janszoon and Torres.