7月2日电，香港买入200.18亿港元本币捍卫联系汇率制。

Group 1 - The core point of the article is that Hong Kong has purchased 20.018 billion HKD in local currency to defend its currency peg system [1] Group 2 - The action taken by Hong Kong indicates a proactive approach to maintain the stability of its currency amidst potential market fluctuations [1]