 Complete the following phrase:  In December 1937, as the Second Sino-Japanese War intensified, he was sent to Hong Kong, where he ran the Eighth Route Armys office. Among other matters, he was responsible for arms purchases for the CPCs Southern Bureau. His work there formed the foundation of what would become the CPCs united front strategy in the territory, aimed at using Hong Kongs economic resources and connections to overseas Chinese communities to fund CPC aims; indeed, while in Hong Kong, Liao cultivated relations and alliances with the territorys big capitalists. His mother arranged for Jing Puchun to be sent there as well, as a surprise for her son; the two had a joyous reunion at the docks as Liao stepped off his ship, and married soon after, on 11 January 1938. Liao left Hong Kong in January 1941, but after the Imperial Japanese Army 