With regard to the second category of documents, namely the particulars and proof of payment allegedly made for a third party, the plaintiff seeks these documents to challenge the veracity of the defendant's defence. Once again, this misconceives the proper basis for an order for discovery. The defendant's defence is, at its heart, a simple denial of ownership. Whether she made payments, and the purpose for which those payments were made, is not directly probative of the question of legal title. The plaintiff's own pleaded case is that it was wholly unaware of any third-party arrangement. The defendant's assertion of such an arrangement is, therefore, part and parcel of her denial. The plaintiff cannot, at this interlocutory stage, deploy the tool of discovery to compel the defendant to substantiate every aspect of her denial. This is a matter for the trial itself, where the defendant's evidence on this point can be fully tested by cross-examination. As the Court of Appeal made unequivocally clear in Nguang Chan (supra), the purpose of discovery is not to assist a party to prop up his case.