江西铜业在香港的股价下跌2.9%，此前宣布计划发行不超250亿元债券。

Group 1 - The core point of the article is that Jiangxi Copper's stock price in Hong Kong fell by 2.9% following the announcement of a plan to issue bonds not exceeding 25 billion yuan [1] Group 2 - The bond issuance plan is aimed at raising funds, which may indicate the company's strategy to strengthen its financial position or fund new projects [1] - The market reaction, reflected in the stock price decline, suggests investor concerns regarding the implications of the bond issuance on the company's financial health [1] - The specific amount of 25 billion yuan is significant, as it represents a substantial capital raise for the company [1]