Question: Zhang Xiaoming as director of theHong Kong and Macau Affairs Office helps connect mainland China to what? 
Sentence (from "Overseas Chinese Affairs Office"): Its forerunner, the Committee of Overseas Chinese Affairs, was established in 1949; He Xiangning, the wife of Liao Zhongkai, served as its first head from October 1949 to April 1959, after which her son Liao Chengzhi took over the position of head until the abolishment of the office in June 1970.
Relevant evidence: No