Nira, you questioned if marriag will grant a city hukou.
As far as I know, in China, marriage will not grant a city hukkou automaticly as in USA marrying a US citizen could open the pass to a illeal immigrant to obtain a perminant green card.
Marriage between two different city residents could followed by rellocation of one party. Then throught the new job and complecated process, hokou could be trasfered to the other city. However, the bigger the city is, the harder the Hukou could be obtained. For example, the Beijing or Shanghai hukow might be much harder to receive than a smaller city.