Zhuhai — Gardens and the HZMB (1-1.5hr)

Zhuhai is one of China's cleanest cities, accessible from Hong Kong via the HK-Zhuhai-Macau Bridge in 45 minutes by shuttle (HKD 65-80 plus CNY 20-35 local bus). Key attractions include the scenic Lovers' Road promenade, Yuanming New Garden, and Chimelong Ocean Kingdom, one of the world's largest aquariums. Cheaper than the typical rival day trip, at roughly HKD 100-115 total transport, it also offers less crowd than #3 Macau. However, it requires a full China visa for non-PR, making it 30% less convenient than Shenzhen's visa options.