Does this eSIMFlyer plan cover Mainland China if I cross the border to Zhuhai?

No, this specific eSIMFlyer plan is exclusively valid within Macau. Many travelers enjoy a quick border hop to Zhuhai in Mainland China for shopping or dining. However, once you cross the border, you enter a different telecommunication zone with its own network infrastructure and internet regulations, including the 'Great Firewall.' For seamless connectivity in Mainland China, you would need a separate eSIMFlyer plan specifically designed for that region, ensuring access to global services like Google and WhatsApp.