This article investigates whether first-language (L1) Chinese-speaking learners of Japanese as a second language (L2) can acquire the knowledge that the reflexive pronoun jibun 'self' within the head noun phrase of Japanese relative clauses cannot refer to the relative clause subject. Successful acquisition would suggest that learners are able to acquire the underlying syntactic knowledge that the head noun phrase of Japanese relative clauses is base-generated external to the relative clause. A truth value judgment experiment was conducted and the findings suggest that L1 Chinese learners can indeed acquire the target syntactic knowledge in Japanese relative clauses, which argues against the Representational Deficit hypotheses and supports the Full Functional Representation hypotheses of L2 acquisition.