[HK stocks retreat as Alibaba drags tech peers lower with eyes on key China political meeting] Hong Kong stocks declined for a second day with tech firms leading losers as the Chinese Communist Party kicked off a key meeting in Beijing under a cloud of economic slowdown. The Hang Seng Index retreated 0.4 per cent to 24,763.77 at the close of Monday trading. The Hang Seng Tech Index slid 1.3 per cent, while China’s Shanghai Composite Index added 0.2 per cent. Alibaba Group Holding, the owner of this newspaper, sank 1.6 per cent, while its health unit lost 1.2 per...