Mandarin is the official language in Guangzhou, while Cantonese is the most widely spoken language among the local population. English proficiency is generally limited compared to some other major international hubs, though it is understood by professionals working in sectors that frequently engage with international travelers and expatriates. Significant efforts have been made to accommodate foreign visitors in city centers, including signage and support services to facilitate easier navigation and communication. While you should not expect widespread English fluency in casual local interactions, travelers can typically manage in central business districts, upscale hotels, and major tourist areas where staff are accustomed to assisting non-Chinese speakers.