A MAN alleged to have taken part in two jewellery shop robberies in which $4.5 million in valuables were stolen went on trial in the High Court yesterday. Wong Kwok-ying, 29, denied two counts of robbery. He is being tried by a jury before Deputy Judge Cannon. Opening the Crown's case, prosecuting counsel Mary Sin told the court the holdups occurred in 1989. Both jewellery shops were in Nathan Road, Tsim Sha Tsui. One robbery took place on September 18 at the Jewellery Creation Company. The other occurred at the Supra Jewellery Company on November 6. On both occasions, the robbers - one held a gun, one carried a knife and the other held a bag - rushed into the shop and ordered staff to empty jewellery trays. The raiders fled in a car. Counsel said there was no dispute that the holdups had taken place. The issue for the jury to consider was who had taken part. It is the Crown's case that Wong was one of the three robbers. The hearing continues today.