【明報專訊】HONGKONGERS would do well to peruse Enriching the Practice of One Country Two Systems, an article by Zhang Xiaoming (who is a deputy director of the Hong Kong and Macau Affairs Office) included in a study guide to the report of the 18th national congress of the Communist Party of China, for it shows the central authorities intend to beef up the role they play in Hong Kong affairs. This specific policy will have far-reaching impact on the government of the SAR and the situation in it. Hong Kong's quasi-autonomy now seems precarious like eggs piled one on the other, and it is a real concern that Hong Kong's prosperity and stability may suffer.