Beijing, again in secret. There he met with Mao and then Deng. Although communication with Mao was hindered by the reliance on translators, Mao warned the younger Cambodian against uncritically imitating the path to socialism pursued by China or any other country, and advised him to avoid repeating the drastic measures that the Khmer Rouge had imposed before. In China, Pol Pot also received medical treatment for his malaria and gastric ailments. Pol Pot then travelled to North Korea, meeting with Kim Il Sung. In mid-July he returned to Cambodia, and spent August touring the South-Western and Eastern Zones. In May, Pol Pot adopted the Silver Pagoda as his main residence. He then relocated to the city's tallest structure, the 1960s-built Bank Buildings, which became known as "K1". Several other senior government figures—Nuon Chea, Sary, and Vorn Vet—also lived there. Pol Pot's wife, whose schizophrenia had worsened, was sent to live in a house in Boeung Keng Kâng. Later in 1975, Pol Pot also took Ponnary's old family home in the rue Docteur Hahn as a residence, and subsequently also took a villa in the south of the city for his own. To give his government a greater appearance of legitimacy, Pol Pot organised a parliamentary election, although there was only one candidate in every constituency except in Phnom Penh. The parliament then met for only three hours. Although Pol Pot and the Khmer Rouge remained the de facto government, initially the formal government was the GRUNK coalition, although its nominal head, Penn Nouth, remained in Beijing. Throughout 1975, the Communist Party's control over Cambodia was kept secret. At a special National Congress meeting from 25 to 27 April, the Khmer Rouge agreed to make Sihanouk the nominal head of state, a status he retained throughout 1975. Sihanouk had been dividing his time between Beijing and Pyongyang but in September was allowed to return to Cambodia. Pol Pot was aware that if left abroad, Sihanouk could become a rallying point for opposition and thus was better brought into the Khmer government itself; he also hoped to take advantage of Sihanouk's stature in the Non-Aligned Movement. Once home, Sihanouk settled into his palace and was well treated. Sihanouk was allowed to travel abroad, in October addressing the UN General Assembly to promote the new Cambodian government and in November embarking on an international tour. The Khmer Rouge's military forces remained divided