中国国航：子公司山东航空将以29亿元人民币租赁10架波音737系列飞机。

Group 1 - The core point of the article is that China National Airlines' subsidiary, Shandong Airlines, will lease 10 Boeing 737 series aircraft for a total of 2.9 billion RMB [1] Group 2 - The leasing of the aircraft indicates a strategic move to expand Shandong Airlines' fleet and enhance its operational capacity [1] - The decision to lease Boeing 737 series aircraft aligns with the growing demand for air travel in China [1]