BEIJING: Top U.S. negotiator Christopher Hill arrived in Beijing on Wednesday, saying it is time to resolve the dispute over the frozen funds of the Democratic People's Republic of Korea (DPRK). The issue involving the Macao-based Banco Delta Asia (BDA) had been ``very difficult,'' Mr. Hill told reporters on his way to a dinner with Chinese Vice Foreign Minister Wu Dawei, who heads the Chinese delegation at the six-party talks. ``It involves legal issues and bank regulatory issues and it's not easy to solve''. Mr. Hill met Wu Dawei and other officials of the Chinese Foreign Ministry on Wednesday. Xinhua