In foreign language textbooks, cultural representations embedded in texts and images not only facilitate the acquisition of linguistic knowledge but also construct ethnic or political identities. Over the past century, the mainstream ideology in Taiwan has changed due to the rotation of ruling parties and generational shifts. This change is also evident in contemporary English-as-a-Foreign-Language textbooks. In light of this emerging issue, this study employed critical discourse analysis to examine three sets of textbooks that are widely used in high schools in Taiwan. The study reveals that textbooks produced in Taiwan generally: (1) highlight the indigenous culture of the island, (2) extensively depict contemporary Taiwanese celebrities, specialties, and natural landscapes, (3) embellish the period of Japanese and Dutch-Spanish colonisation, and (4) strategically differentiate between 'China/Chinese' and 'Taiwan/Taiwanese'. The findings expose the Taiwan-centric perspective of the textbooks while downplaying the significance of the national title -- 'the Republic of China'.