As mass mobilisation in the rural areas got under way, schedules for the completion of land reform were brought forward. Although more mass mobilisation was involved in the land reform campaign of late 1950 than in the urban sector, the movements at that time were largely from the top down. Within industry in north China, the process of democratic reform was stepped up. In view of China's increasing concern about developments in Korea, it was particularly serious that the beginnings of radicalisation, in the summer of 1950, lacked vigour and had led labour unions into a reactionary position. Following its involvement in the Korean War, China became particularly concerned with the security of the frontiers. The pacification of southwest China had been proceeding steadily throughout 1950 but, with the possibility of invasion, all efforts had to be directed towards carrying pacification to a rapid conclusion.